This [FONT=Arial][size=2]is not the case universally with this denomination in the U.S. The presumption is that they are. Advise the RCIA director to consult the diocese in the case of uncertainty.[/size][/FONT]
[size=2][FONT=Arial]There is no “official” list per se, although there has been a declaration from CDF regarding “Mormon” baptism. The lists on the internet reflect the general opinion of learned experts and canonists, and the diocesan sponsored pages are generally reliable. An investigation would hinge on the details of the actual baptism.
In addition to the canons though, the Directory for the Application of Principles and Norms on Ecumenism, 1993 would be consulted by the person making the exam. From n. 95, in part:
"95. . . . the following points should be kept in mind:
"a) Baptism by immersion, or by pouring, together with the Trinitarian formula is, of itself, valid. Therefore, if the rituals, liturgical books or established customs of a Church or ecclesial Community prescribe either of these ways of baptism, the sacrament is to be considered valid unless there are serious reasons for doubting that the minister has observed the regulations of hisher own Community or Church.
"b) The minister’s insufficient faith concerning baptism never of itself makes baptism invalid. Sufficient intention in a minister who baptizes is to be presumed, unless there is serious ground for doubting that the minister intended to do what the Church does.
"c) Wherever doubts arise about whether, or how water was used, respect for the sacrament and deference towards these ecclesial Communities require that serious investigation of the practice of the Community concerned be made before any judgment is passed on the validity of its baptism."
Sprinkling can also be valid, but the problem often arises that water never hit the person, and particular cases are subject to close scrutiny.