>>14312390Let me elaborate
The eyes are same or similar, black iris, simple, no tear ducts or eye lids or eyelashes
Even the shapes are exact same copies some time
The head is also similar, bald, with wrinkles and those shapes are also often identical
The nose is also often identical. Large, wide, and if it is not identical it looks like it would from that perspective.
The skin tone is the most important feature, it is usually white with black outlines with maximum contrast
The style is recognisable and even deviations from the original style still make them recognisable variants of the feels guy meme.