I hear the RCC accepts baptisms occurring in other churches as being valid?
Some yes, the primary requirement is the Triune formula, but I believe there are exceptions. I was baptized Lutheran and that was accepted.
It isn’t just the Triune formula, there are other factors. For example, RCC will accept Orthodox and Evangelical adult baptism, but in NO case will accept Mormon or JW baptisms.
Mormons do use the ‘Triune formula’ but don’t accept the Trinity doctrine.