I'm wondering if there was a Level Leaderboard somewhere for the time attack mode.

Unfortunately the only place IL times are tracked for this game are at Cyberscore, so some of the first place times won't even have video or some sort of proof. Hopefully it helps you out though. https://www.cyberscore.me.uk/game/1279 Jocke won't add a level leaderboard here because this game is pretty much inactive so.