Rodania RCAF, Seamaster Cosmic Turler, Poljot Sturmanskie, Oyster Pioneer, Omega Speedmaster Chocolate Sapphire Sandwich, and Seamaster 300M.
maybe a horizontal picture so i don't get a neck-ache? But seriously, it looks like you've got a pretty eclectic mix of stuff. I started in that direction as well but have recently started to focus on a specific reference (vintage Doxa 300 subs and Heuer Camaros). It's because after looking at and trying on probably hundreds of different watches those two references just spoke to me. It looks like you've got a lot of difference case styles and designs. Maybe start with some classic vintage Heuer/Rolex examples and see if they strike your fancy.
Maybe a GMT would round out your collection, and maybe a simple three hander (Rolex Explorer or a Railmaster). You might also look at adding some colored dials (Seiko Alpinist). Speaking of you don't have any Japanese watches in your collection. There is definitely a lot to work with here.
Interesting, I've never seen a cosmic with that style (I am no expert and not implying it is wrong, just saying that I've never seen it) I'd guess that a Constellation is next
Quite common actually. 752 calibre with a sparkle dial from the late 1960's. This one is branded by Turler which is a well known Swiss jeweller.