Some Lemmy user at one point had asked about a "multi-paste" feature, if there was a way to use keyboard shortcuts to display multiple clipboard items and copy/paste them out at will (this user mentioned similar to RTS games they like to play). ~~If someone can find that post, can you notify them and direct them here, please? I'm having trouble locating it but I recollect that it was within the last 3 months.~~ Edit: I found the post!
Somehow this was stuck in my mind when I accidentally pressed a keyboard shortcut, that showed my last 5 copied items. This isn't exactly what the user was looking for but I thought I'd publicize it here.
If you use Fcitx (because you need multi-language input) from the fcitx5 packages, then you may already have installed the clipboard add-on. You can use fcitx with just one keyboard layout. By default, it's activated by Ctrl+semicolon and shows the 5 last entries, but the number can be configured.