There is a lot of ambiguity about who was VFwhat at what time.
the designations swapped around a lot on those days and i think even the USN for some periods doesn't really know what was what VF.
https://en.wikipedia.org/wiki/List_of_inactive_United_States_Navy_aircraft_squad rons#Disestablished_Fighter_(VF)_squadrons_and_VF_ designations_no_longer_in_use
But O'Hare was on Lex in February 20, 1942 and stayed there until he had to go on his promo tour for his Medal of Honor, early 42, just before the Lexington sank,
F4F-3A Wildcats flown by LCMDR. Thach (F-1) and Lt. O'Hare (F-13) during the aerial photography flight of April 11, 1942.
he was officially quoted as being in VF2 and he did have the Felix on his plane.
So that's a good indication.