Hmmmmmm...where do you find writings about ‘Replacement Theology’ in the written teachings of those groups?
What is ‘Supercessionism’ and exactly where was it introduced in the Second Century?
By the way, what does the Bible say about the Good News being taken to the Gentiles?
What do you think is the “correct” belief....and why?
Do some research. Here’s a head start: Justin Martyr’s “Dialogue With Trypho The Jew” written in the Second Century. It is older than the oldest complete manuscript of the New Testament.