Interested persons might look into the Federation of North-American Explorers (FNE). They are affiliated with the Catholic FSE or UIGSE (Union of International Guides and Scouts of Europe). This is a Catholic youth movement. The main page for the movement in North America is www.fneexplorers.com; the page in New Jersey — the first group in the USA, and affiliated with a thriving traditional Mass center — is at www.northstarexplorers.org.
They also have a facebook page at https://www.facebook.com/FNEExplorersUSA
Any further questions can be directed to akela [at] northstarexplorers.org.
We here at Saint Benedict Center are looking into it for our troop, currently a BSA troop, but, as yet, know little about it.