oh gosh, I always forget about those, thanks! around here, it was mostly the 68k suns, followed by sparc. the 386 unix variants were mostly sequent.
I remember one fun job interview in the 90's, where before we went to grab beer the interviewer (my future boss) stopped in the office and said "and this will be your sparc" - to be quite honest, that was such a huge perk!
Incidentally, we were a Sun ISV and customer out in the Silicon Forest, where Sequent was located (and Intel, Tektronix...). I initially learned C++ and Smalltalk from an adjunct professor from Sequent. Also where Cray Research Superservers (nee FPS) was, who developed a multiprocessing SPARC system before Sun. Which is how, as a teen, I got sent by a marketing guy to onsite at Cray, to "port" some of our software to the Cray S-MP. It was a nice time and place, with a little like a mini version of being in Silicon Valley, but with more rain.
I also spent a lot of time in the old sequent campus, at the OSDL, and a bunch of time at OGI before it got subsumed.
I still remember the day when Microsoft visited the office, saw I had a Microsoft keyboard connected to my sparc, and asked if I ran internet explorer (they had a solaris version). I laughed and said, "no, I only have 96mb of ram, you can't run internet explorer in only 96mb of ram".
Also in the OGI science park was Verdix (makers of Ada development tools, and some kind of multilevel-secure workstation software).
I don't know what all the other companies were. But amenities included private showers for biking to work, a small forest jogging trail, and a restaurant that made nice turkey sandwiches and huge blueberry muffins to replenish those calories.
the ISP was founded by a mixture of ex-intel and ex-ogi telecom, so there was always a bit of closeness there.
eventually, at the OSDL, we had a Fred Meyer across the street, and not much else. but damnit, we had a great raised floor datacenter!