Valkyria Chronicles comes to mind - it's a TBS with a big splash of shooter in it. I'd also second Slay the Spire, and arguably Baten Kaitos for the same reasons. Steamworld Heist seems like an option as well, and while one of the genres is much heavier than the other it's certainly an excellent game.

I play enough stuff at weird genre edges that I'm honestly not sure what is and isn't a cross-genre game anymore, so those are the points of overlap between games I adore and things that seem like they might be there.