Man I wish Harden and Kawhi teamed up earlier. My favorite duo for sure.
A prime duo of Kawhi x Harden would be as big a cheat code as Durant x Curry was but the timing just was never right between the injuries and the shyt Morey was up to; at least not until 2020 but like the other breh said, Kawhi/LAC made the wrong choice (George) and so did Harden/Houston (Russ).
It's interesting that you brought it up tho, because the top 5 players of the 2010s were LeBron, Curry, Durant, Kawhi, Harden... but 2-5 was a musical chairs affair
heavily influenced by titles won, with Durant #2 in public opinion for the longest (up until about 2022) in large part bc he teamed up
with Curry to beat the best title-bound iterations of the Kawhi/Spurs (2017) and Harden/Rockets (2018).