Oh that was just a thing I tripped across that gives a general
   view of how I tend to see the history of Christiandom as a unit.
   But Ethiopian church as well as the Coptic and gosh there's
   another one as well... accepted the first three Ecumenical
   Councils and not the 4th and beyond. If I remember right, the
   issue was of an iota of difference. Literally - a letter. Nature
   of Christ stuff. Some say it's a translation issue. Some say
   it's fundamental doctrinal differences. The churches do have
   good relations generally speaking - I mean they'll stand side by
   side at times in council of churches type things - although they
   do not accept communion with each other if I remember right.
   They're more like, "Ah, you guys again." "Yeah, YOU guys again".
   Been a while since I was involved with any of that.... a good 15
   yrs or so.. so I'm a little rusty-to-details. === I suppose if I
   had to draw my own chart, I'd stick the Oriental and Eastern
   Orthodox in more or less parallel lines, but I agree with the
   Papacy + resulting split of the Reformation and all of the
   off-branchings. To me, it makes more sense than seeing them all
   as equals 'cause each of them _does_ have a historical context
   that's not unimportant.