Budapest and Benko and Albin not so good in my opinion. Also Smith Morra not so good RIP Ken Smith my friend.
The Budapest isn’t much of a gambit and it’s not great either as in the main lines White gives back the pawn to reach a pleasant position with two bishops where they are practically playing for two results. The Benko is decent but in its pure form I believe there are some lines where White is just a bit better. The Morra is not good, I think the question is whether Black has the better side of equality or more. Personally, I just transpose to the Alapin myself as I don’t see any reason to earn tons of theory for a sideline and it’s just easier to play a less sharp game against a gambiteer. The Morra is just some tricks.
Budapest gambit (black)
Evans gambit (white)
Ursurov gambit (white)
I had never heard of the Urusov Gambit and it's win rate is not that bad. Seems dangerous.
basicly a weapon to draw the russian player out of therory and avoid the drawish game
Dont need a game bit. Just the nimzowitsch variation