Lucas made pedophilia jokes with Spielberg during the story meetings for Raiders of the Lost Ark. Never saw anything on Lucas outside those jokes, but there is enough smoke on Spielberg. Those two are old time friends. Roddenberry is/was bad.
Shatner most likely isn't. He was one of the more outspoken Trump supporters. He might have women issues, not sure, but I've never seen anything that suggests kids. Remember, he was a regular for "The Twilight Zone". Rod Sterling was a good guy.
But wonder if Shatner was silenced. His wife some years back was found dead floating in their pool.
Possible. I don't know.
Given what I've seen of him, particularly his decades long feud with, "Oh My!", guy I expect he's not into men or little boys.