I honestly don't actually expect GG8 to become gold producers @tomsmithidg - I believe they are a team of geo's that love the hunt and finding gold, and they'll sell off projects and keep doing the exploring and the finding and the proving out of deposits.
They are termed developers because they have 3 projects that contain mineable gold and they are developing those projects in terms of progressing the understanding of the deposits - through drilling and assays - through to declaring and increasing Resource estimates and converting as much of that as possible into Ore Reserves - so adding value through the drill bit.
I reckon that's one of the reasons why GMD (Genesis Minerals) are on the "Subs" list with 7.4% of GG8, where they can easily buy enough shares on market to move to 10.1% to block a takeover attempt if they needed to - I reckon Ral at GMD would like the optionality of adding Comet Vale and possibly even Mulwarrie to GMD's asset register, as they are they're not too far away from Leonora - they're between Kalgoorlie and Leonora but have a look at how close Comet Vale is to Genesis' Aphrodite and Bardoc assets (which includes Zoroastrian):

Source: https://www.proactiveinvestors.com.au/companies/news/219145/bardoc-gold-raises-1203-million-to-fast-track-gold-focused-strategy-219145.html [26-April-2019]
Note: Bardoc Gold, whose main projects back in April 2019 are shown on that map above with the red stars, and the one below (in 2020), was acquired by St Barbara (SBM) and then those were among the assets that Genesis aquired from St Barbara in mid-2023, so they're Genesis' assets now.
The following map was taken from the Bardoc Gold PFS presentation in early 2020 before SBM acquired them - showing their projects' proximity to Kalgoorlie:

Source: Page 5 of https://announcements.asx.com.au/asxpdf/20200330/pdf/44gj3f67yy630d.pdf
The following map from Genesis' website today shows how the Genesis gold projects stretch not only from Leonora to Laverton but also down to just above Kalgoorlie.

Below is GG8's map of Comet Vale and Mulwarrie:

Source: https://gorillagold8.com/project/comet-vale/
You can see that Genesis' Gwalia mill (@ Leonora) is at the top of that map, around 120km north of Comet Vale, but Genesis already own their Bardoc Gold assets alongside Comet Vale.
Now after Comet Vale and Mulwarrie, GG8's third most advanced project is Vivien which might NOT be on Ral's radar (at GMD), despite it technically being in the Shire of Leonora, about 14 km west of Leinster and approximately 6 km from the Agnew Gold Mine.

The Agnew Gold Mine (6km from Vivien) is shown in the top left corner of the following map of GMD's current tenements:

So I'm guessing Vivien is approx. 120 to 125 km (as the crow flies) from GMD's Leonora Mill, and even closer to (like around 80 to 85 km from) Vault's KOTH mill - remembering that many people expect GMD to make a move on VAU and gain control of that KOTH mill at some stage, although that's been the expectation for a couple of years and it hasn't happened yet.
That map above is from GMD's website today but is out of date as it doesn't show the tenements they recently acquired from Focus (FML), as shown below in a map taken from Genesis' D&D presso last week:

That one is down to just 50km radius circles around each of their two operating mills, but I think that Genesis' longer term aspirations extend beyond that.
Anyway, Genesis may or may not want to buy/own Vivien, but they do intend to make money if GG8 gets acquired by somebody else hence their current position as GG8's 3rd largest shareholders. And they would very likely prefer to have Comet Vale in their hands than let one of their competitors get their hands on it. My own thoughts are that Comet Vale ends up in Genesis' hands sooner or later and possibly Genesis may just buy all of GG8 to get Comet Vale (and Mulwarrie) if GG8 aren't interested in selling off Comet Vale and/or Mulwarrie in a separate transaction or two.
Remember also that Simon Lawson is on the GG8 Board as their technical director and he's the dude that turned Gascoyne into Spartan and got it merged with RMS and is now in charge of exploration at RMS - he does the second half of RMS' D&D Presso - well worth watching: D&D 2025 | Ramelius Resources - Mark Zeptner, MD & CEO and Simon Lawson, Deputy Chair.
I don't mind if Gorilla Gold take Comet Vale or Mulwarrie through to production, but I think it's far more likely that Comet Vale gets acquired by GMD or someone else and Mulwarrie's natural owners are really Ora Banda (OBM) whose Davyhurst gold mill is right next to GG8's Mulwarrie project. Alternatively, if OBM had spare milling capacity at Davyhurst, they might consider toll-treating ore from GG8's Mulwarrie gold project.
There's a reasonable amount of that going around these days - it's how HRZ are generating income - toll treatment agreements with various mills until they get Black Swan modified, operational and ramped up, which wouldn't happen before the end of calendar 2026 I'd reckon.
But the TL;DR summary is that no, I don't think GG8 are particularly interested in taking any of these projects through to production, at least not in the sense of building their own mill when there are multiple mills within trucking distance of their gold projects, and there are multiple producers with gold projects within spitting distance of theirs.
They could - Comet Vale looks like it would support a mill - but I just don't think that's what these guys are about - they want to keep finding gold - more than they want to be gold producers, in my opinion. I could be wrong. Either way they look good to me. High risk, but one of the better explorers. Most of their money is going to into exploration, and that's what you want from a gold explorer, especially when they're finding so much gold.
As far as your other question about comparable companies @tomsmithidg - none come to mind, purely because GG8 have so many prospects and they're progressing multiple prospects at the same time, so they're acting like explorers who are proving out their projects to sell off rather than acting like a company who wants to become a gold producer ASAP. In my experience, those companies that really wanted to be producers would focus almost exclusively on their very best prospect which in GG8's case would be Comet Vale at this stage, and some people might think they are doing that, but they're still drilling at Mulwarrie and they're still progressing Vivien at the same time. Genesis was sort of like that but they did a lot of M&A to grow rapidly and they did want to be major producers and that was their stated goal from the start. Most explorers want to get through to producer status ASAP so they can start to self-fund their further exploration efforts, and perhaps I'm totally misreading GG8 and that is indeed their plan, and if so they'd be plenty of comps around to point to, but building a mill takes a huge amount of effort and a lot of money so getting from explorer to producer - unless you go via the toll treating method - is both time-consuming and expensive - and really takes a lot of the focus away from exploration during that period - and I just get the strong feeling that GG8 are about the hunt. And so far they've proved to be very good at it.
There are multiple ways to make money in the gold game, and I reckon GG8 are very good at what they do and they're creating value - and can continue to create major shareholder value without every producing any gold, just by proving up deposits and selling them off to people who need or want more ounces for their existing mills.