Sure they were. The Church was described as "catholic" by St. Ignatius in late 1c -- yearly 2c at the latest.
As soon as the concept of a canon existed, it was the Catholic Canon; prior to that, they simply had whatever books came their way.
Stop your nonsense. Ignatius used the word 'Catholic' in the sense of the church being 'universal', which is what the mystical church is, all believers being part of Christ's body.
The early churches had nothing that could identify them with the Roman Catholic Church today, including a 'Priest class'.
Peter stated that all believers were priests (1Pet.2:9)
As for the Canon, it was the Jewish Old Testament Canon, the same one used by Christ and the Apostles.
No Apocyrypha books were ever part of it.