Preparing to get excommunicated from the FOSS Maxi Illuminati for this, but I just got a new company laptop with W11, liked the UX has a Plasma vibe, so flashed a USB with a W11 ISO, installed on a spare personal laptop.

Other than the installation process involving 100 million billion trillion "but are you sure you don't want us to spy on you tho?" messages and still requiring a workaround to make a local user without a Microsoft Account, it is smooth and I'm pleasantly surprised by how snappy it is on a couple years old midrange laptop.

I couldn't ever use it as a daily driver because lol Microsoft. And there's still some "telemetry" you can't disable fully without using a modded ISO and hoping a future update doesn't just put it back.

It also has ads on the start menu if you leave the default settings in place. And by default it has a keylogger on.

Can anyone recommend any (preferably FOSS) software that creates custom W11 ISOs to your own specifications (uninstall preloaded apps, add some of your own, your settings as default, etc etc...)

The ones I'm aware of are mostly proprietary and aimed at enterprise.