No, but the water is getting awfully deep for me. (This is water, isn't it?) We're still talking constitutionality of issues unspecified in the amendments, including the 14th.
Maybe I'm misinterpreting your question, but could the states, prior to the 14th, shrug off the rights defined in the consitution? Deny free speech? Search and sieze unreasonably? Censor press? All of these rights were specified and limited national power, while your reading of the 14th expands it. That's my whole thing.
Wouldn't limits be helpful for questions like SSM? Instead of one national law that you may not like, you could move to state where the law is agreeable to you. Abortion might have worked out that way. Prayer in school might have.
As far as school prayer, it IS specified in the First. It falls under Establishment. We're talking about what the public school as a government agent can and cannot do, the effect on the individual is secondary, so the restrictive clause is the applicable one. There are other issues involved with an involuntary audience of minor children, but we can stick to one at a time.
Then we started talking about why the First applies to the States and local school boards, which of course is due to incorporation through the 14th.
Then you argued local control to question the validity of incorporation and the 14th, and I pointed out why there's a hole in that logic. It would render portions of the original Articles meaningless and unenforceable, and nothing was written into the Constitution to be meaningless and unenforceable.
Sound close?
As far as the States pre-14th, none of the Amendments applied to them save the 9th and 10th. So yes, they could and often did infringe on Federal privileges and immunities. Only the Federal government's hands were tied by the COTUS, the States were bound only by their own Constitutions.
Defining Federal citizenship and taking primary power over the meaning of citizenship away from the States was the biggest key to restoring the Republic and addressing the real issues in cohesion that led up to the Civil War. Citizens had to be citizens of the Republic first, which among other things secured them the protections afforded under the COTUS and restored meaning to the Comity and Supremacy Clauses.
But all of that is a tangent, really. The word you're looking for is "Establishment".