Thank you! I had no clue what to even search for but your comment pointed me in the right direction.

I spent the past hour setting this up and it almost works, but for some reason when I boot I only see something like “Loading initramfs” and then just a black screen and nothing happens. If I mash the escape key before I reach the black screen then plymouth works and I see the logo and LUKS password prompt.

In the past I wanted to use auto unlock via TPM, however it seems quite complicated to set up and the Arch wiki advises against it anyway, so I just enter the password during boot.

The one improvement I would like to make here is to have a nicer input (visually) like Fedora but I’m not sure how this is done and how I could replicate that on Arch.