https://en-denzingerbergoglio.com/who-are-we/ Vatican II priests found each other and are doing the same work now together.
From an upbeat point of view, it seems to me things are being addressed from myriad different directions. If no pope has spoken
ex cathedra since Pope Pius XII, then it means, to my simple mind, that on some level, all since respect the office because in spite of themselves they simply do not have the spiritual chutzpah for ex cathedra.
It is actually laughable to consider that even if they completely disagree with the concept, they cannot actually address it. They are not allowed to.
Very interesting to my uneducated mind about the original Roman Catholic Church. It seems that the odd ball groups who had the good fortune to exist legitimately before 1958 have carried on. More or less. But the ones developed since standing on sedevacantism are now seeming to me to be less favored... not that I would reject certain of them for myself. And through no fault of their own, for, if one was not already in an odd-ball group, what hope to create one in the new order? Something like that.
In fact the group I found is identical with the SSPV except for being in a canyon-wide arm's length relationship with Rome.
I may and desire to post about what I have found. But not until I have read enough to determine I can go with it and put it up for scrutiny by the experts.