Amazon is: https://www.amazon.com/ap/signin?_encoding=UTF8&openid.assoc_handle=usflex&openid.claimed_id=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select&openid.identity=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select&openid.mode=checkid_setup&openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.ns.pape=http%3A%2F%2Fspecs.openid.net%2Fextensions%2Fpape%2F1.0&openid.pape.max_auth_age=0&openid.return_to=https%3A%2F%2Fwww.amazon.com%2Fgp%2Fyourstore%2Fhome%3Fie%3DUTF8%26action%3Dsign-out%26path%3D%252Fgp%252Fyourstore%252Fhome%26ref_%3Dnav_youraccount_signout%26signIn%3D1%26useRedirectOnSuccess%3D1
Ring is: https://oauth.ring.com/oauth/v2/signin
And just by the way, to sign into 1Password’s forum, I always have to copy and paste my password from my 1P login items list because it never suggests that one either.