Reputation league for 2021: 1. José Carlos Santos; 2. Kavi Rama Murthy; 3. Henno Brandsma; 4. Brian M. Scott; 5. Math Lover; 6. Eric Wofsey; 7. Arturo Magidin; 8. Noah Schweber; 9. Misha Lavrov; 10. Martin R.

Top 10 users with highest reputation after 2021: 1. Brian M. Scott; 2. André Nicolas; 3. Robert Israel; 4. José Carlos Santos; 5. Asaf Karagila; 6. Ross Millikan; 7. Qiaochu Yuan; 8. Arturo Magidin; 9. Jack D'Aurizio; 10. robjohn.

You can find some older similar posts here: chat.stackexchange.com/transcript/17403/2020/1/6 and chat.stackexchange.com/transcript/17403/2018/1/8

And, of course, you can also check reputation leagues for other years.