Although, debatably, homo neanderthalensis is not a subspecies of homo sapiens, thus negating the need for a homo sapiens neandterthalensis and homo sapiens sapiens classification differentiation to exist, making homo sapiens always the modern man (who yes, is also an ugly caveman) and homo neanderthalensis the most recent full time ugly caveman.
Although, debatably, homo neanderthalensis is not a subspecies of homo sapiens, thus negating the need for a homo sapiens neandterthalensis and homo sapiens sapiens classification differentiation to exist, making homo sapiens always the modern man (who yes, is also an ugly caveman) and homo neanderthalensis the most recent full time ugly caveman.
This is immensely funny. On the other hand, I think there is indeed some debate about sapiens and neanderthalensis not being different species, thus the meme. https://www.nhm.ac.uk/discover/are-neanderthals-same-species-as-us.html