It took me an embarassingly long time (given how keenly involved I was in OpenID stuff ~17 years ago https://simonwillison.net/search/?tag=openid&year=2007) to understand that OpenID Connect is almost unrelated to the original idea of OpenID where your identity is a URL and you can prove that you own that URL.
OpenID Connect is effectively an evolution of OAuth.
OpenID Connect is effectively an evolution of OAuth.