Also endeavour is not really arch with a graphical installer, or that is what I've seen at least.
I tried to help someone once that installed endevouros and for some reason their kernel parameters were being overwritten every time they updated, turns out that was an issue because endeavour installed dracut instead of mkinitcpio by default? I don't know wtf was that. They ended up switching to arch after that lol.
Also their /efi directory was set as read-only to the root user, meaning that to even see if their kernel parameters were there they needed sudo lol
I just switched to Endeavour from Manjaro when I upgraded my hardware, and every update changes the default kernel on the selection screen. I go in and edit the file to change the default from lts to the latest kernel, and the next update switches it right back. It's maddening, i could do Arch, and I've done it on other machines I just don't have the time for that level of customization. I already waste enough time tinkering.
I thought Endeavour was just Arch with an installer. Conversion is as simple as swapping repos and removing the eos-hooks package apparently, and depending who you ask: cleansing systemd from your system.