I mention Brooks of the Quarantine Collective on YT a fair bit. He's the most loudly 'left' creator I watch, (part of the group behind Operation Inflation at the ICE protests) though I generally prefer people who don't get too lost in the Left/Right paradigm and focus more on effects. Others in the vein are ones like FD Signifier, We're in Hell, Contrapoints, Folding Ideas, Dan Carlin, etc. Not really a fan of the ones you listed though so maybe these won't be your cuppa.