This is just my personal list

• Ublock origin in advanced mode to block js like matrix did (or in basic mode on mobile/if you don’t want to waste time fixing broke websites)
• Decentraleyes to avoid loading libraries
• Cookies autodelete to you guess it
• Consent O Matic to auto consent gdpr banners
• Link cleaner to clean copied urls from tracking queries
• Redirector to redirect famous websites to their alternative front-ends (YouTube to piped etc)