The original aiki of Morihei Ueshiba included no sutemi waza. All that is the development of Minoru Mochizuki, founder of yoseikan.
The sutemi waza, you are correct, were a vital part of old-style aikido.
Best to you.
Don't forget that Ueshiba study Judo under Kiyoichi Takagi from 1903 to 1908 when he was calling his marital art Aikibudo.