i think an exhaustive list of every extension i use would be a bit much. instead, i'll list the ones i view as vital to my ability to use the web at all:
ublock origin, obviously
noscript, hence my signature
greasemonkey (userscript manager)
stylus (userstyle manager, you can safely assume i have a userstyle for any site i visit with anything vaguely resembling regularity)
imageblock (adds a one-click button to the toolbar to prevent the browser downloading any images. very useful when my network slows to a crawl)
useragent switcher (great for visiting a site that incorrectly tells me it won't work on my browser. i keep it on random mode to keep webdevs on their toes, manually overriding only when necessary)
web developer (valuable for anyone interested in webdev. doesn't do anything you can't do without it, but has a GUI that makes some things easier)
sponsorblock (i used to use clickbatit remover too before i discovered the much-superior invidious. with a few simple css changes, invidious is an experience far better than youtube with clickbait remover. the only reason i watch videos on youtube itself rather than on invidious is that invidious doesn't have subtitles)