It "kinda" sounds like you like the original wheel but just wish it was offered in 15" - it is:
https://www.lmctruck.com/1967-72-che...ls-as-original
If custom (or at least non-original isn't a problem), then the one in Mark's post #3 is by far my favorite aftermarket wheel in these trucks. Really like the look of those. Keep in mind that going with a smaller dia wheel without upgrading to PS might get old pretty quickly - there's a reason the originals were so big back in the day.