There are a lot of open mold frames that... let's say "draw inspiration".... from big brand frames. The most obvious one is the SL7 and it's probably worth keeping a list of those with all their subtle differences, but I wanted to reference some others I've found and keep a thread going.
Inspiration: Canyon Endurace
Open mold versions: Velobuild VB-R-066/OG EVKIN CF-025
Notes: Velobuild available in rim or disc brake config. I think the Velobuild version is a good bit lighter than OG EVKIN's.
Inspiration: Cervelo R5
Open mold version: Tantan FM6x9 (609, 619, 629, 639)
Notes: the geometry is EXACTLY the same lmao. Also available in rim & disc versions as well as half vs fully internal cabling (I wanna say 639 = fully integrated).
I know the TT-X38 is "inspired by" the newest Scott Foil but I'm too lazy to dig all those photos up. But you get the gist. If I had the time I'd start a website to capture all this open mold data. Finding info is a real pain in the ass