If so could someone give me some advice on which type of relationship I should
add it to? Thanks!
We technically do not have a relationship for something like this.
If the parts _and_ colors of the parts of one of the spiders were the exact same
as one of the other spiders, then we could add a relationship for pattern differences
if the spiders were assembled the same and only differed with respect to a print.
That is not the case for any of the Minecraft spiders because they are all built
differently.
Likewise, if the parts of one of the spiders were the exact same as one of the
other spiders and only some parts differed in color, then we could add a relationship
for assembly color differences if they were assembled the same and had the same
pattern. Once again, though, that is not the case since they are all built differently.
Basically, if you want to search for Minecraft spiders, search for "Minecraft
Spider".