Is it the correct interpretation that tags must be for what's in the image, and not for what a YCH could become, on a YCH post? ie. it should not be tagged "human" if the example is an anthro, even if the YCH commission could result in a human? Likewise, should not be tagged "alicorn, earth pony, pegasus, unicorn"?
("any species", "any gender", and "any race" would take their place)