I have a sedevacantist, Traditional latin mass, non diocese affiliated church near me. Sister i talked to maintains all other religions are destined for hell, even Lutherans.
Im open to a conversion but idk. Imo Jesus doesnt need the middleman but ive been wrong before.
And, another thing, knowing Holy Mary - the Glorious - is beyond — I will not pontificate, but praying the Holy Rosary daily is a joy.