I might get eviscerated for saying this, but you can replicate the GNOME workflow fairly well on KDE—KNOME if you will.
There’s an overview similar to that in GNOME, you can set up shortcuts to mimic the keyboard+one-app-one-workspace workflow, etc.
Good luck trying to recreate Plasma with GNOME though.
Yeah it’s not a one-to-one conversion of course. An update few months back allowed meta to open Overview on its own though, fwiw.
I’d still like the dock in the Overview too, like yourself, but for now I just have a launcher on the bottom like dash-to-dock.