this is pretty good 'teen
i would add
https://commentpicker.com/youtube-channel-id.php to the YouTube category, it gets the longer channel ID/URL of a channel from the username. you only have to do a basic addition question, it's meant to make you watch an ad but if you have an adblocker it works immediately. you might already have something there but if not, there
you should add
https://dox.soy/search in the breach searches category
for Geographic/Map OSINT,
https://earth.google.com/ has a couple of things google maps doesn't, mainly the 3D view (which it used to have, but i think it was taken out) which is very useful when referencing different landscape features. also
https://www.gmapgis.com/ just to plot stuff on a map. the
overpass API is also useful, the query language isn't very intuitive but there isn't really any substitute if you're not an inborn geoGOD:
https://wiki.openstreetmap.org/wiki/Overpass_API https://overpass-turbo.eu/ <- you might have to disable some specific option to get this working in firefox, if your settings are made for high privacy
i recommend adding
https://steamid.io/ and
https://steamid.uk/ for Steam accounts, and
https://steamhistory.net/ of course
https://namemc.com/ and
https://laby.net/ for Minecraft accounts
i use
https://imginn.com/ to look at instagram user profiles,
https://bskyviewer.github.io/ for bluesky (allows looking at profiles that otherwise require an account to view),
https://www.tumlook.com/ to by pass tumblr's mature content wall and other prompts asking to sign in
https://www.fastpeoplesearch.com/ as an alternative to truepeoplesearch
https://voteref.com/ US voter records, very useful