Of course, any pseudo-Christian group that falsely called itself Christian would have been and still be deemed Gentiles--even according to Paul.
Key word is "strangled". Paul uses it and describes the Noachide Law. That Paul was teaching the gentiles of Asia Minor Noachide Law turns everything around completely.

--H.J.Res.104--
H.J.Res.104

One Hundred Second Congress of the United States of America

AT THE FIRST SESSION

Begun and held at the City of Washington on Thursday, the third day of January, one thousand nine hundred and ninety-one

Joint Resolution

To designate March 26, 1991, as `Education Day, U.S.A.'.

Whereas Congress recognizes the historical tradition of ethical values and principles which are the basis of civilized society and upon which our great Nation was founded;

Whereas these ethical values and principles have been the bedrock of society from the dawn of civilization, when they were known as the Seven Noahide Laws;

Whereas without these ethical values and principles the edifice of civilization stands in serious peril of returning to chaos...