- No AppIndicators in default spec

- All UI is scaled to work for touch interfaces

- Default windowing support amounts to split-screen

- App "icon" style launcher, even using the same sliding-widget model people loathe on iPad

- Quick-settings menu pane in the top corner, almost identical to the iOS/iPad one in GNOME 40

I could go on, but I think it's safe to say that GNOME (especially GNOME 40) is derivative of iPad UI design. Other visual cues (dock, lockscreen, stylesheet, calendar, etc.) are pretty plainly inspired by the Mac UI.