Absolutely, would love OIDC/OAuth. I use https://goauthentik.io/. Teedy supports only LDAP so that's what I'm using right now.
I've been avoiding LDAP like the plague. I think MS is moving away from self-hosted AD, and LDAP really loses its luster for most folks when the self hosted options are something like OpenLDAP.
And the parent makes a good point that OIDC/OAuth does not give group membership.