Pop OS, combined with "Toshy" for using Mac keyboard shortcuts. I find this is a really comprehensive translation of Mac shortcuts, even cmd+shift+{} works for moving between tabs. I use my Keychron keyboard in Mac mode retaining all the same muscle memory.
https://github.com/RedBearAK/toshy
It was working quite perfectly with 22.04 but there are some caveats with the recent Pop OS "Cosmos" version, I can't find the shortcut to cycle between instances of the same application (cmd + `) and in general the OS is a little buggy and functionality can be quite sparse in some applications like you can't rearrange tabs in their terminal yet and it didn't even have "open new tab to the same folder I'm in" until recently. However the trajectory they're on is a Mac-like system-wide consistency and thoughtfulness, it's just early-stage.