What I can't get used to is no mouse button paste in either MacOS or Windows. The X11 all-mouse copy-n-paste is so much more efficient.
In macOS, if you highlight text, you can then paste it using Shift + Command + “v”.
Kind of like X Windows middle button.
I can do this with text highlighted in iterm. Highlighted text can be copied in other apps as well with Shift + Command + “v”. Or with terminal app, where the shortcut only works when used within terminal app itself.
In other situations, often Command + Shift + ‘v’ is paste without formatting (which I wish was the default!).