What type of foul, if any?

[iref4him]

Basically, when the ball goes through the basket, the ball is dead until the team that is entitled for the throw-in picks up the ball. At that time the ball is live. If any contact occuurs from the time between the bucket being scored and the player picking up the ball to throw the ball in, the contact is ignored unless the contact is intentional or flagrant which would be technical foul (intentional and/or flagrant techinical foul).

If the official did not think it warrented a technical foul, then talking to the players sometimes helps.