Another translation would be "What are the bosses that you know like?", so it fits your pattern, however the question word refers to the type/quality of the bosses you know and the fact of knowing some bosses and also knowing what they are like is not questioned. "Do you know what bosses are like?" would be translated as "Tudod milyenek a főnökök?" or a little bit unnatural but still correct using the same word as this sentence would be "Ismered milyenek a főnökök?".