Commodore engineers wrote a long paper as to how Amiga would develop after AAA and if you read it you will see the X1000 is what they describe (I kid you not).
To be fair all Commodore decided was AAA was a waste of money and would yield terrible price/performance ratio. Whatever else is written in this paper is limited to technology available at the time. This is a no brainer, two of the most powerful consoles use standard GPUs from either Nvidia or ATI. If Microsoft can't afford funding magic custom chipsets then nobody can

However, had Commodore had the intelligence to dig up VRAM Ranger and forget about AAA/Hombre and other DRAM based crap they could have wiped the floor with the competition in 1990 let alone 1993 when AGA was around.
I remember quite specifically the most powerful video cards for PC were the Diamond Stealth units, specifically the VRAM models. If that's what VRAM did for crappy ISA bus systems in the mid 90s just think how sophisticated a computer designed around a VRAM chipset like Ranger would be. And this was completed in 1987 because Jay Miner said so in interviews.
As for the rest, Commodore never should have considered anything other than PowerPC end of story, in the early 90s PPC was the spiritual successor to 68k series in terms of power (RISC based) and price compared to 32bit Pentium CPUs....the first line of which were pretty damned lame until at least MMX was out. The protracted stupidity of contemplating anything other than x86 or PPC was typical Commodore.....and it sent out a message to the Wintel/Apple world "we are clueless twats still grappling what CPU to use on a replacement for our ageing architecture let alone a complete design"
As for the A2000, don't mention that pile of junk as anything other than typical Commodore cockup. 30 months after A1000 all that we got was A1000 chipset and some slot connectors. Great...the issue was more colours...more sound channels....faster blitting...faster stock CPU like 14mhz 020 mated to chipset DMA on the motherboard.
What was Not wanted was ISA slots and a breathed on A1000 68k design with ROMs not WOM. Ditto for A500...another disaster thanks to some clueless moron at Commodore sacking Los Gatos engineers and hiring clueless teams from West Chester and C= GMBH to design A500 and A2000. No TV modulator, not even an on/off switch on the actual computer for the A500. And one of the ugliest cases ever designed second only to the CD32 probably. Nice.