Raspberry PI Imager as well as Balena Etcher burn ubuntu on SDCARD n change settings in SDcard before booting with it.

config.txt

dtoverlay=vc4-fkms-v3d

forums.raspberrypi.com/viewtopic.php?t=326126

Ubuntu Desktop (this method requires Pi4, keyboard, and display)

Ubuntu Server (this includes the non-display you seek)