True Left

You are exaggerating Hitler's physical neoteny. Yes, we are Hitler fans, but let's not mix behaviour with physiognomy. This is Hitler during WWI:



He has an oval face, of course, but look at his dense moustache! Also, this is Hitler's voice:



This is an adult male voice.

A voice change or voice mutation, sometimes referred to as a voice break or voice crack, commonly refers to the deepening of the voice of people as they reach puberty. Before puberty, both sexes have roughly similar vocal pitch, but during puberty the male voice typically deepens an octave, while the female voice usually deepens only by a few tones.[1][2][3]
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Children are able to sing in the same octave as women. When the voices of male teenagers break, they are no longer able to sing in the same octave.

Using voice as a measure of neoteny, Hitler is less neotenous than an average present-day woman. Whereas our racial ideal would be people whose voices do not deepen at all.