There isn’t any such thing as “Orthodox Catholicism”.
The Orthodox churches split off from the Catholic church hundreds of years ago and operate independently of it. The Catholic Church recognizes that they have valid apostolic succession and valid sacraments, but they are not in communion with the Catholic Church, and hence are not Catholic.
Some Catholics use the word “orthodox” to mean “traditional Catholic” but this is very confusing because to most of us, the word “Orthodox” denotes an Orthodox Church, for example the Greek Orthodox Church or the Russian Orthodox Church, which as I discussed above are not Catholic churches.
Regarding the actual Catholic churches:
“Roman” Catholicism is more properly called Western Catholicism or Latin Catholicism.
Eastern Catholicism is what I presume you meant by “Easter”.
The Catholic Church does not believe that anyone is going to Hell simply by being a member of an Eastern or Western Catholic Church, or even by being a member of a non-Catholic church such as Orthodox Church.
For that matter, the Catholic Church does not teach that members of other non-Catholic churches such as Protestant churches, Judaism, or Islam are going to Hell simply for being members of that church.