While Mastodon doesn't support #OpenlD Connect, OIDC is just OpenlD on top of OAuth2.0. If your app allows configuring all URLS for your ldP you can use nearly any OAuth2.0 provider.
Avatars currently aren't supported via this (| added one) but can be! Working on a patch for Synapse!
Sorry; had to re-post these because I forgot hashtags on the opening post. Apologies if this spammed a bit.
Devoted to furries who love big things, puffy things, and puffy things getting bigger! Federated, open, welcome! For a fatter side, take a peek at https://wobbl.xyz by Tarrien! Please provide a reason when applying for an account.