A browser extension that limits webpages to default Windows fonts only would eliminate that factor from contributing to identification without flagging it as suspicious. A slightly more robust version could frequently cycle between multiple subsets of default Windows fonts. Say Windows comes with 100 fonts. So you could have thousands of configurations with different subsets of those.

"Just" remove a random 2.5% of the fonts, a different random set per request (context).

That one browser which everyone hates despite it being the best adblocker and anti-surveillance browser out there randomizes your fingerprint.