Sharing your read-only link would be helpful, those look like Google fonts based on the fonts.gstatic.com references. My guess is you have old classes that are still referencing those somewhere. Although there was a thread recently about an issue with Webflow loading more fonts than necessary: Open sans - Webflow adds unused fonts file requests - entire site - #9 by cyberdave
Without seeing your published and read-only it is hard to troubleshoot.