LineageOS actually seems to be getting less degoogled recently. They're adding stuff for better Google apps support (that can be installed manually). But I believe it's as degoogled as reasonable custom ROMs get. Not much advanced privacy/anonymization features though and no stuff like Play Integrity support obviously. It's a ROM for these who don't need gapps at all. And if you do, just buy a second hand device with the stock ROM and put your banking apps there. Play Integrity doesn't work well on any custom ROMs now anyways.
EDIT: also EOS is EndeavourOS that is a Linux distro.