I think the best macOS clipboard manager is the one that is built into Alfred. The one in Raycast is very similar and also good. I would recommend installing Alfred just for that. You don't even have to use the main Alfred window. It's very lightweight, so not a problem. The same goes for the Music controller, actually.

I also loved Copied because of it's sync and great iOS version but it's unsupported so wouldn't really recommend it.