My two Lotus bikes from 1982 have 7200 Dura Ace and 6200 600 (Arabesque), both with Uniglide freehubs, 6 speed Uniglide cassettes, friction shifting, and 126mm spacing. There are also 5 speed Uniglide freehubs.

My 1985 Centurion Ironman has a later version of 600 (6207) with friction shifting, a freewheel -type hub, a 6-speed Uniglide freewheel, and 126mm spacing. The next year's model got 6208 SIS shifters and RD, but was still Uniglide, 6 speeds, and 126mm. I THINK it still used a freewheel hub.

My 1989 Schwinn Circuit has Sante(5000) with SIS, a 7 speed Uniglide freehub, a 7 speed Uniglide cassette, and 126mm spacing. Apparently there were also Sante freewheel hubs and freewheels, also in 7 speed and Uniglide.

My 1994 Cannondale had RX100 with SIS, a 7speed Hyperglide freehub, a 7 speed Hyperglide cassette, and 128mm spacing, which allowed you to use 126mm or 130mm hubs.

My 1996 Ritchey has 7410 Dura Ace with STI shifters, SIS, an 8 speed Hyperglide freehub - with threads for Uniglide cassette threaded smallest cog - an 8 speed Hyperglide cassette, and 130 mm spacing.

That kinda covers the evolution, I think.