TortoiseGit.

Through settings, I move the Show Log to the top context menu level, and it's my entry point to every Git operation.

I see a history tree to see and immediately understand commit and branch relationships and states. I can commit, show changes, diff, rebase interactive or not, push, fetch, switch, create branches and tags, squash and split commits, commit chunk-wise through "restet after commit", … And everything from a repo overview.

/edit: To add; other clients I tried never reached what I want from a UI/GUI, never reached TortoiseGit. Including IDE integrations where I'm already in the IDE; I prefer the separate better TortoiseGit.

GitButler is interesting for it's different approach, but when I tried it out the git auth didn't remember my key password. (Since trying out jj I found out it may have been due to disabled OpenSSH Service.)