That would depend on how much they physically resemble humans and which creationist you ask I think. To their eyes they will either be humans with slight difference or a new specy of ape and their reaction will depend on that.
Btw,the neanderthal article is quite old (1994) and reference an even older article it seems(1908) without any detail so it's hard to know from that how they decide if one is an ape or human.
Edited by Son, : No reason given.
Edited by Son, : No reason given.