I know in the Talmud there was a dispute whether or not Samaritans were actually Jews, so when moshiach comes will Samaritans become Jewish or will they just become a Bnei Noachide, also will Samaritans be resurrected from the dead when moshiach comes if when moshiach comes they are considered actually Jewish
Rebbi said: “A Cuthean is like a gentile.” Rabbi Shimon Ben Gamliel said: “A Cuthean is considered a Jew.” (Tosefta Terumot 4:10, 4:12)