2016, 2021, and maybe 2017 and 2019 are the versions of Steph that immediately come to mind as peak Steph years.
Even though Steph got his Finals MVP in 2022, he had his worst regular season since like 2013, and his overall playoff numbers weren’t quite as good as some of his other years so I probably wouldn’t say this was peak Steph.
I think 2021-22 Steph was clearly the best. His dribbling was much sharper, he was far better under-pressure and when doubled, and his conditioning let him dominate all game.