I think the guy who has been really good in this department is the tickler as Mindless Tickle Slaves. He hasn't added anything for a while but his shoots with Kylie were incredible.
He is a great tickler and she is an ex-Playboy model and genuinely very ticklish with great reactions.
In a more girl next door vibe, Irving Krebb of Vellication Video was amazing but he closed the store a while ago (although he is still on here from time to time).
I really liked TC 5291 with Audrey Dupree. She's hogtied and the tickler (Also a good ticklee) tickels her sides and she is going crazy
Also may demming in 5351 and 5352 is going crazy by tickling her sides.
The other thing is if a girl tickler finds and particular ticklish sopt on the upper body she doesnt stay there for quite some time. Tickle Abuse is very guilty of this. As for great upper body tickling F/F anything with either Tillie or ruby on UK tickling, but again there is such a focus on the feet and i cant figure out why?
I personally love the video of the bbw milf being tickled by Tacoma ticklers on genuine tickling. Awesome model and laugh and the tickler is very sadistic and skilled