I’m a “mainly” so not always but more often than ”sometimes”.
American ales - pales, NEIPAs, WCIPAs, American wheats etc - I do, and also any other ales that are supposed to have clean fermentation character. NEIPAs I wait until high krausen before putting the pressure in. I usually ferment around 20-22C at 5ish and increase to serving pressure at high krausen.
Saisons, Belgian pale/blonde/tripel/dubbel (although I rarely brew them), witbiers, hefeweizen, Bitter etc I generally use my Spiedel fermenting barrel without pressure.