In generic term ment those that are perfect in physical condition, had nobble blood and were perfect warriors.
They were created by recruiting noble fammilies sons that wanted to prove their loyalty to the Emperor and prove their valor in battle.
Text describe that because they were young they had a kind of fanatical and broutly charge that terrorised their opponets.
In fact because of their recruitment kind Ikanati are the best cantidates of the Tagmatic unit that changed the name to Archontopulla in the early Kimnenean
era. Archontopulla were "cataphracts" and their name means "sons of nobles"...
Scholarii were similar but their soldiers had average age and in there they could begin their millitary career as career officers.