Thanks, Quinn. I still see it in Xcode 15 (15A240d) and cannot for the life of me figure out where it is coming from. When I look at the output from the link step I definitely see multiple calls to -lc++ and -lz but I cannot find them in the build settings. I'll submit a new feedback.

There is a 15.7.1 now but I can't find any confirmation if this was fixed there. Hopefully so.