Neither Tut nor Akhenaten were true sons of Amenhotep III. Akhenaten was his son only in the sense of his kingly successor.
Queen Tiye (the Queen of Sheba) had many important sons - Akhenaten, Smenkhare, Tut, Osorkon (Kheruef/Senaa?), and Takelot (Merymose?). For what it's worth, Smenkhare actually resembles Menelik the closest, at least in a crude phonic sense.
© Charles N. Pope, US Library of Congress. All rights reserved.