Sure there was. The Church referred to those sedevacantist types as "schismatics".
between SSPX and FSSP
Of course those groups didn't exist prior to Vatican II. But consider the "Old Catholics": they split from Rome after Vatican I.
between CRMI and Independants
(I think you mean CMRI.) Sure there was. The Church referred to those groups as "schismatics" and sometimes "heretics".
Pre-Vatican II those divisions didn't exist.
Of course they did. That's why canon law -- pre Vatican II -- specified the crime of schism and its due punishment.
Our intent is to unify in love those who want to imitate Christ. As the psalm says “Lord, if You mark iniquity, who can stand?” If Campion marks iniquity against a fellow sinner, whom Jesus said to forgive, not seven times but seventy times seven times, how can love ever prevail? Say the “Our Father” and note the criteria that is set forth for our forgiveness. No where in that prayer does it say forgive only after you have gotten your pound of flesh/your revenge. In the venue of this new Caucus we hope to create space for love and where they will not accept it, we will create room for prayer. On the internet there’s absolutely no requirement for face to face confrontations. Get over it and move on. As the Moderator has specified.
The problem is that the schismatics/heretics are currently occupying Rome. It turns everything on its head.