I also received this answer from PG Music:

The Mac version does have MIDI Chord Detection, but it is still lacking the window that suggests 4 different chord variations.

Options > MIDI Patch Maps, etc. > Insert current MIDI chord

The hotkey is command+return


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.