Baraminology is creationist pseudoscience silliness. It is created as an alternate to Linnaean classification. According to the Mythology in the Book of Genesis God created plants and animals. "after their kind" so Baraminologists separate living organisms according the imagined kinds in Genesis. This can mean trying to reconcile limited evolution with the bible but the same people in other contexts will insist that the whole of evolution is in their opinion false and evil, "evilution".
When evolution can be confirmed, eg with the Peppered Moth creationists insist they're the same kind or baramin (but they're still moths). When fossil evidence shows one species evolving into another species creationists typically deny the evidence.
Biologists see strong similarities between humans and (other) apes, the similarities are certainly greater than similarities between different types of moths. Still the bible says humans were created separately from apes or other non-human animals and for creationists what Bronze Age people wrote in Genesis is more authoritative than any scientific evidence. Therefore Fossil Hominids get assigned, somewhat arbitrarily to the human kind (baramin) or the ape kind (baramin) then creationists try and deny the transition from ape kind to human kind. Comparison of all skulls has a table of different creationists' opinions of which baramin each skull belongs to, discrepancies and all.
A related claim is that there are no transitional fossils, this is false. When transitional fossils are pointed out to Creationists they frequently assign the transitional fossil to one or another kind (baramin) and keep repeating the pretense that there are no transitionals.