Almost all of them enjoy headpats also example of the right compliments; Rogue - nice tits (lowers love a by 1-2 but bumps up inhibition 2-5/obed by 2-4) & , (depends on points you have overall/rng/time of day) extra beautiful/gorgeous/lost in eyes (Can't recall anymore). Kitty; Nice tits, you did great in class today, lost in eyes, gorgeous/extra beautiful (rng/depends on points overall). Laura pretty much what's the fragrance, toned today, nice job in the danger room. Jean pretty much everything works I dunno. Storm fragrance, nice tits, xtra beaut today/gorgeous (never do nice eyes), i'm so into you. Emma (after you've sexually awakened her) nice tits, extra beaut/gorgeous/lost in eyes (i think?), fragrance is guaranteed good points like storm. Jubilee is similar to Kitty & Rogue but a lil more rng/overall stats heavy low stats give her compliments on beauty/tits private ask what fragrance but again even good/medium near high it's rng and she can say back off.
Honestly you can get quite high stats by complimenting them each portion of the day it especially works if you focus one girl, buy the love/inhib books as well as shocker vibes if they're even somewhat into you they'll take it immediately and it's a big stat boost in all three stats most girls it's 15-25 across the board. Swimsuits are damned expensive don't buy them unless you a) give yourself money via console commands or b)focus a specific girl. Compliments/flirtations should be done to any & all girls you can find going to & from where you plan to train as this maximizes xp gain to increase money overall.
So if you go to the danger room have travel mode unlocked, if you see kitty/jean/laura compliment them or do something else, hit danger room compliment/do something else to that girl(s) as well. If asked to follow you can say no each time for early obedience or do follow for love points. Each girl doesn't really enjoy anything specific outside of compliments.