Shireroth

Cederism, with its pantheon of gods is most certainly compatible with Arya and its general philosophical framework.

However let it be noted that Orthodox Arya fits other religions very well into it and is very flexible. The version of Arya known as Neo-Arya is doctrinal and acts like a true organized religion. This Neo-Arya is considered by its followers to be the true and superior faith. Much of the Aryezi nobility is Neo-Arya but the populace follows the practice of mixing religions so remains Orthodox Arya as most of the mystics and saints in the faith.

Considering Cedrism holds reincarnation as an important doctrine, is that actually compatible with Orthodox Arya? From the other topic I had the impression it wasn't.

The ultimate goal of reincarnation is the transcendence of it and union with the one. The reincarnation part is skipped in Arya but the union with one is essentially the same. The goal is the same.