Even though there are not a lot of "cleanish vintage sounds" on the list by name, that sound is still pretty easily achievable. Line 6 Doom does some nice clean sounds(my fav actually), SLO clean channel, Zed, J45, Brit Trem, Litigator, A30 fawn, Jazz Rivet, Cali Rythm I....they all do that sound well enough to make me feel like there is no shortage in the clean tones department.
Actually most any of the amps can made to do clean tones pretty easily. No need to add amps that completely forego the heavier sounds just for the sake of calling them "clean amps". I say bring on the versatility.
For sure the amps you put on your list, here. Would like to see a Powerball as well. Definitely a selection from Randall and Diezel. Dont be afraid to get creative. Dont be afraid to take risks. Please though, any new additions, quality over quantity by a large margin.