gtk3, gtk4 (probably?) qt, qt in flatpak, gtk3 in flatpak, gtk4 in flatpak (probably)... I'm just not fighting it anymore
Agreed completely.
KDE just feels better and more performant. Even if GNOME Shell uses less memory in its own, it doesnt always feel good to use.
However GNOME Shell and Adwaita are beautiful, consistent, and designed through human feedback. KDE is fragmented, too nested, and has so many conflicting designs.
Its not possible to make KDE feel exactly like GNOME Shell but I wish I could.