Suggestions for modern hard rock, that isn’t metal

It's a great question. There's a band, "Like Machines" kind of approaches this.

But who's the new Boston, Rush, BOC, Aerosmith (like, the good Aerosmith)? In a way I guess you could call it all "Les Paul Rock."

The Warning very much has a metal vibe (90s/2000s). Tight act but I wouldn't put them in the same musical category as say, Triumph. Maybe Greta Van Fleet is another good example.