@Linebaugh I assume by "modern rock acts" you're excluding people who've been around for a long time i.e. Boris?
I'd point to things like White Hills, Squadra Omega, Goat, The Myrrors, etc
definitely in the psych/improv/krautrock, etc vein
or on a slightly different tip, Altin Gun and Khruangbin
those are the kinds of people I find "interesting" in the expansively defined world of current guitar-driven rock or rock-adjacent music
people mining the past for new directions forward, or at least searching for new directions
rather than just using it as empty symbolism