Boeing Flight Crew Training Manual lists 1, 5, 15, for 300/500 and 5, 15 for the 400.
Flaps 1 (-300) and flaps 5 (-400) take offs have least clearance.
QRH lists speeds for 1, 5, 15 only (-300) I seem to remember from ground school that for this model 2 has no practical purpose.