You can reasonably be certain that if it is run by the dominant organizations of the Jewish community in either Eretz Yisrael or Golus, it will NOT be operated according to Torah. Most Jews in both Israel and Golus are not frum, and the richest and politically best connected are not frum. As a small, frequently discriminated against (at best, persecuted has historically been the norm), we can hardly create an “official” anything,
The best solution is to assume that anyone who is not Shomer Shabbos is a putative non-Jew (at least for marriage purposes, not for whether he/she can be a Shabbos Goy or buy our hametz over Pesach), and unless the person can reliably trace maternal ancestry to someone who was frum, they should expect to need to convert if they want to part of the frum community. The high rate of intermarriage began over two centuries ago, and given the custom in western countries to identify children by their father’s surname, one should assume, unless proven otherwise, that anyone whose family is not frum and has Jewish surname is not Jewish. It should be noted that in situations where a Baal Tseuvah (i.e. someone not frum who has decided to become frum) discovers he/she is not Jewish, since the person is already shomer mitsvos, conversion is very uncomplicated.