What new RTS games will you recommend for a middle-aged man?

[IronFist]

I have an uncle in his 50s who just got an Xbox series S. He would love some new RTS games to get back in the groove. Note that he isn't exactly new to RTS, he's very familiar with Supreme Commander, Dune and Dawn of War games.
Just that it's been long he's played those and he wants to try out some newer ones.
Your recommendations will be appreciated.