I think his foundation still donates to various organizations, but it doesn't look like it gets that involved in the party.
https://www.opensecrets.org/2024-presidential-race/kamala-harris/contributors?id=N00036915
https://www.usnews.com/news/elections/articles/2024-11-05/the-biggest-political-donors-of-the-2024-election
Top 10 to Democrats
Bloomberg, Michael R. $43,453,634
Moskovitz, Dustin & Cari $38,785,700
Eychaner, Fred $31,057,700
Simons, James H. & Marilyn $30,757,103
Hoffman, Reid Garrett $26,659,700
Mandel, Stephen F. Jr. & Susan Z. $22,934,500
Simon, Deborah J. $19,830,960
Jordan, Wayne D. $14,488,811
Larsen, Christian $13,442,479
Heising, Elizabeth D. $12,638,350
Top 10 to Republicans
Mellon, Timothy $172,042,500
Uihlein, Richard & Elizabeth A. $137,775,196
Adelson, Sheldon G. & Miriam O. $136,855,700
Musk, Elon $133,038,600
Griffin, Kenneth C. $101,405,484
Yass, Jeffrey S. & Janine $96,122,180
Singer, Paul E. $59,299,100
Schwarzman, Stephen A. $39,103,046
Dunn, Timothy M. $35,415,200
Bigelow, Rob $34,991,500
But note that while Musk as an individual is down for $133m for "Republicans", "SpaceX" (ie Musk's plaything) gave $276m to Trump: https://www.opensecrets.org/2024-presidential-race/donald-trump/contributors?id=N00023864
So only the top 2 Democratic donors would make it into the Republican top 10.
The thing about Soros isn't that he donates a lot; it's that the rabid Republicans use him as an antichrist, and that can drive social media, while actual facts about how much he or Republicans actually donate will be ignored.