https://web.archive.org/web/20190906021919/http://www.abgx.net/
https://web.archive.org/web/20190920190017/http://www.abgx.net/ngc_releases_alpha.txt
https://web.archive.org/web/20190816011900/http://www.abgx.net/ngc_releases_date.txt
I am curious about this redump business though. Seen it on a few other systems before now and it has various reasons, good and bad.
For something like the xbox it made sense (many original xbox releases were trimmed in general or to fit on single layer discs, the 360 comes along and needs more original styles), for the DS then courtesy of the DSi whitelisting old games and having new ones include a signature (
https://hackmii.com/2010/02/lawsuit-coming-in-3-2-1/ ) then Nintendo made the previously blank area house the signature which the older Rudolph dumpers did not grab/assumed was blank and thus split some of the releases for the Scene (though there was also internal drama and splits there but that is more rules than results*) and served to help basically nobody -- no flash cart cared, no emulator cares, no ROM hacker cares (other than now having to possibly service two ROMs), no custom firmware on newer devices cares...
Wii stuff largely dodged it, though that is most likely to see scrubbed (which can now be recovered) or WBFS dumps floating around the place in general.
*I say that but some Scene releases opted to compress the binaries internally as was done on many official games (see BLZ/DS binary compression as it is non standard,
https://www.romhacking.net/utilities/826/ having all types) which technically reduced the space at the cost of not being the same those opting for stock. Some intros and trainers also appeared but those were fewer in number than the GBA era.
What happened on the GC that sees it be a thing?
I don't see anything on
https://scenerules.org/ that might indicate a split like we saw in some scenes and the general console rules don't mention much either, not to mention this would probably have still been wild west after a fashion (though nowhere near as bad as the PS1 era).
As far as collecting then that is about 2000 releases if I ignore the LaKiTu, SUNSHiNE and OneUp internals. Doing the naive 1.4gigs X that (some games were multi disc, others would compress lower) then that does add up, though more plausible with modern hard drives I suppose than it would have been back when.