an ordinary chessplayer wrote on 11/01/24 at 03:43:19:

Or the Hyper-Accelerated Dragon after 1.Nf3 g6 2.e4 c5.  Still, that seems like more work than necessary relative to the other options.

I don't play the Grunfeld, but I can tell you that I reach similar positions as White via 1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.d4 d5 6.c4 and nowadays (my sample size is online blitz games in the 2300-2400 range) my opponents probably choose 6...c6 3 or 4 to 1 versus 6...dxc4. I don't see a ton of logic in choosing to risk a KID or a random variation of the Symmetrical English when you're going to reach the Fianchetto Grunfeld via a more conventional move order all the time and have to know it anyway. You're just creating more work for yourself. 

The other big thing about the Grunfeld is how you are meeting 1.c4 and 1.Nf3 Nf6 2.c4. If I recall correctly more than one reputable source has recommend 1.c4 g6! as the easiest, intending 2.d4 Nf6 (of course), 2.Nc3 g6! (a good variation of the Symmetrical), and 2.e4 e5!?. Against 1.Nf3 Nf6 2.c4, I think you can either go into all the Neo-Grunfeld stuff with 2...g6 3.Nc3 d5, or just play more simply with 2...c5 and learn something there, e.g. 3.Nf3 d5!? and so on.

an ordinary chessplayer wrote on 10/30/24 at 19:19:33:

I didn't especially mean professional players. For that I could have looked in the databases myself. I just meant clubplayers, the readers from this (Grunfeld) Forum, who (regularly) play the Grunfeld. What do you guys play in the position I mentioned?

I'm curious myself, but in present form the question is too fuzzy. 

The first task is to narrow down what is a "Grünfeld player"? I don't have a current database, but looking at database.chessbase.com , in a 500-game sample from 2024 after 1.d4 Nf6 2.c4 g6 3.Nc3 d5, the below players have had the black side at least twice. Which ones would you consider to be "Grünfeld players"? (There is no wrong answer.)

Vachier_Lagrave 59
Paravyan_______ 45
Duda___________ 31
Svidler________ 15
Abdusattorov___ 14
Mekhitarian____ 14
Giri___________ 13
Fedoseev_______ 12
Puranik________ 11
Ragger_________ 10
Mamedyarov_____ 9
Nepomniachtchi_ 9
Firouzja_______ 8
Navara_________ 8
Tari___________ 8
Antipov________ 7
Lagno__________ 7
Maghsoodloo____ 7
Sindarov_______ 7
Xiong__________ 7
Aronian________ 6
Carlsen________ 6
Chigaev________ 6
Gledura________ 6
Ivic___________ 6
Vakhidov_______ 6
Dubov__________ 5
Erigaisi_______ 5
Salem__________ 5
Shankland______ 5
Shevchenko_____ 5
Bernadskiy_____ 4
Deac___________ 4
Hansen_________ 4
Ivanchuk_______ 4
Lagarde________ 4
Le_Quang Liem__ 4
Rapport________ 4
Shirov_________ 4
Timofeev_______ 4
Grandelius_____ 3
Jones__________ 3
Li_Chao_B______ 3
So_____________ 3
Van_Foreest,Jor 3
Abasov_________ 2
Amin___________ 2
Areshchenko____ 2
Brunello_______ 2
Burke__________ 2
Iskanarov______ 2
Jumabayev______ 2
Kamsky_________ 2
Krysa__________ 2
Kuybokarov_____ 2
Madaminov______ 2
Moroni_________ 2
Nihal__________ 2
Siddharth______ 2
Tomczak________ 2
Troff__________ 2
Wei_Yi_________ 2
Woodward_______ 2
Xu_Xiangyu_____ 2
Zubov__________ 2