Going to give the benefit of the doubt here and assume this is sarcasm, because yes, he knows. It is part of his full-time job.
That doesn’t mean he has the stat sheets of all 780 MLB 26 man rostered players memorized, but there’s no surprises at this level. He has coaching staff and scouts helping him and would already know about his pitch mix, velocity, splits, etc, before he even came into the game.
No MLB manager in 2026 is sincerely saying “wow, that Natera kid was nasty, I wonder who that was.” He knows.