No, there are gaps and forms of nested hierarchies in creationist models as well. The gaps occur between created kinds and the nested hierarchies exist within created kinds due to adaptation, diversification and speciation.
This is an unsupported inference. Creationists (or evolutionists critiquing creationists) cannot make any predictions about which “mixtures” (using your word) of phenotypic traits are more likely between different created kinds. I don’t know any that do or have made any of these kinds of predictions or inferences. It seems ludicrous to try to guess what these might have been.
I don’t see how anyone can do this either.
I agree with you, these are inferences and predictions that are not supported by observations and need not be true.
This seems like an absurd assertion. We know where the gaps are because of observations - observations free of any interpretive paradigm.