Seems like a modern Everlast/Bubba Sparx crossover guy, however I don't see him as leading the pack.
If they could make songs that could make grown women cry. Guy's voice is mountains ahead.
The industry has a very clear vision of who they want to push (models who can sing clean pretending to play musicians).
Luke Combs, "The Luke Combs" says hi!
Every once in a while there's someone like The Weeknd who can write as well (and I'm not fan of his lol).
I'd say someone like Nilufer Yanya is a lot closer stylistically to the names you mentioned above, but her songwriting style is so retro-90s that it keep her in that Amoeba/Tiny Desk/Pitchfork level of success.
The 2020s "sound" for better or worse (I say worse) has a lot of autotune and that tripled hi hat thing going on.
Which is sort of the point there's a new market rising in counterpart to that. Aka very much like when Kurt Cobain replaced an entire industry of pretty boy metal singers. Which is why I think he's iconic.
The fact he's a big fat tatoo'd mess is his branding that the manufacturers of music can't get their hands on.
You can't compare it to the past, there's never been a time when country was so clearly the dominate form of guitar based rock music.
The rest of rock music suffered from a tower of bable syndrome where genres kept splitting and becoming more and more niche.
Country music is a conservative genre, there's consistency, a standard form that most country has to adhere too. It's the only thing that had any real resistance to the rise of hip hop/electronic music etc.
Country unlike other rock genre maintains a very very strong circle of adult musicians who could write killer music. While traditional rock musicians were obsessed with originality, country focused on actual song writing skills.