Well yes, it definitely depends. For the record I did state "IIRC" & "plane I've flown". The only retractable singles I've flown any meaningful time in were 1974 -'77 M20C's & my '65C. So far nobody has extended the invitation to fly their T-6G or any other warbirds, but I'd happily accept if offered
Everything else I flew had 2 engines and approach flaps before gear extension was the way we operated regardless of which had the higher limitation speed.
I didn't keep their AFM/POH when I stopped flying them, so ... C310R, C402B, PA31-350, SA226-TC, F28 Mk 4000, B737-2/3/400, B757/767, MD-80, A319/20/21
I'm 100% single pilot now and gear down before flaps works well for me and for this plane, but that procedure might change if bought something different.