Najdorf: 2 games
Sveshnikov: 2 games
Both Najdorf games are, actually, Schevendorf.
https://www.chess.com/forum/view/chess-openings/schevendorf-pawn-structure
2 additional Sicilian games in 11th (Closed Sicilian) and 12th (Taimanov Variation) rounds:
https://www.chess.com/events/2021-candidates-chess-tournament/12/Caruana_Fabiano-Giri_Anish
https://www.chess.com/events/2021-candidates-chess-tournament/05/Alekseenko_Kirill-Vachier_Lagrave_Maxime
https://www.chess.com/events/2021-candidates-chess-tournament/08/Caruana_Fabiano-Vachier_Lagrave_Maxime
https://www.chess.com/events/2021-candidates-chess-tournament/08/Nepomniachtchi_Ian-Giri_Anish
https://www.chess.com/events/2021-candidates-chess-tournament/10/Vachier_Lagrave_Maxime-Giri_Anish