i would generally expect a denomination’s beleifs to be clearly stated.
certainly the Catholic and Orthodox churches have very specific beleifs which are well articulated.
Then your definition of denomination can not be used to support what you have been saying. I really don’t think that you know that much about what a denomination is. You can’t seem to answer some simple questions on where your facts and opinions are coming from. If you cannot document these beliefs yourself, or cite a source that does, then how can you truthfully say that there are tens of thousands of different denominations? And I am not sure you have even really defined a denomination.