Couldn't he clone a lot of people if he had raw materials? And the 2 clones he has are full grown with all knowledge and skills from the start. Clone an army using various dna, probably still have ship medical records, or else use local samples, but keep their knowledge and personalities imperial.
If this guy raised the girl like a daughter, wouldn't he try to contact her, at least in private? Imagine if your parents or siblings were still alive after you reincarnated. Maybe he doesn't give a crap, like how he never had a monologue or flashback explaining whether he had his own kids.