We really don't have the answer to this question. The reason is because Christians didn't write down liturgies at first, because everything was transmitted orally, just like the Scriptures. The first extant liturgies available are those of the Didache, of which the liturgical part could possibly have been written as early as 48 AD according to Enrico Mazza, though others say that it was 110 or even later. The Apostolic Tradition of Hippolytus has a liturgy dating probably from 215-25.
It's true that tradition says that the Liturgy of St. James is the oldest that the Church has, passed to St. James himself by our Lord. However, it would certainly not be the texts as they now exist, which are heavily "Byzantinized" and influenced by other liturgical streams of thought too.
AFAIK, all evidence points to an existence of innumerable liturgical "families" and "sub-families" at first, which slowly influenced one another until major families and groups solidified and eventually became dominant. But there were still a whole lot of them in the early Church; a lot more diversity than what we have today.