Wow this is a deep dive, most people focus on the PC era. The Ultima/Impression were some of the very first commercial PCI cards, behind maybe NCR SCSI. Another interesting vendor in that era was Number Nine.
Number Nine was amazing. But even more amazing was the computer integrator / producer that shipped their computers with Number Nines. The company Intergraph.
I haven't thought of Number Nine in years, but the mention reminded me that the BIOS on some of their cards displayed a Beatles lyric quote during boot.