Lovera, on 2023-November-18, 19:00, said:
And then ..
And then there are a few different schemes. The original, reverse 2-way game try, method is to bid the lowest suit where you would accept with 2NT being spades and 3M being nowhere. The main alternative is for 2NT to ask for the shortage (with 3♥ showing short spades) and 3M again being a decline for any suit. Other structures are also possible. The original scheme has a very slight theoretical advantage due to keeping declarer's hand hidden occasionally but is also slightly more likely to be forgotten. In the end, having 2 or 3 different types of game try available is more relevant than the specific structure used thereafter.