most of the athletes I used to support are no longer competing...
however, I still admire all the champions in each sport I follow, so, there are way too many to be named
so, among those still in activity I love watching play "pound for pound" there are:
Baseball: Shoei Ohtani, Roki Sasaki, Clayton Kershaw, Mookie Betts
Hockey: Anze Kopitar, Alexander Ovechkin, Leon Draisaitl, Roman Josi
Alpine Skiing: Mikaela Shiffrin, Marco Odermatt
Speedskating: Jutta Leerdam (well, maybe that's not because of her -however great- skills )
Short Track Speedskating: Hanne Desmet
Athletics: Mondo Duplantis, Yulimar Rojas, Shaunae Miller-Uibo, Faith Kipyegon, Tom Walsh
Swimming: Ariarne Titmus
Judo: Uta Abe
Wrestling: the and athletes in general
Boxing: Vasyl Lomachenko, Oleksandr Usyk and Naoya Inoue
Basketball: Luka Doncic
Shooting: Alessandra Perilli (and the team in general)
and many, many more...