A.J. Foyt Enterprises
Santino Ferrucci
Benjamin Pedersen
Andretti Autosport
Colton Herta
Kyle Kirkwood
Romain Grosjean
Devlin DeFrancesco
Marco Andretti
(GP 6)
Arrow McLaren
Patricio O'Ward
Felix Rosenqvist
Alexander Rossi
Tony Kanaan
(GP 6)
Chip Ganassi Racing
Marcus Ericsson
Scott Dixon
Alex Palou
Marcus Armstrong (GP 1, 3-5, 7-10, 13-14, 16-17)
Takuma Sato (GP 2, 6, 11-12, 15)
Dale Coyne Racing
David Malukas
Sting Ray Robb
Ed Carpenter Racing
Conor Daly (GPs 1-7)
Ryan Hunter-Reay (GPs 8-17)
Rinus VeeKay
Ed Carpenter (GP 2, 6, 11-12, 15)
Juncos Hollinger Racing
Callum Ilott
Agustin Canapino
Meyer Shank Racing
Helio Castroneves
Simon Pagenaud (GPs 1-9)
Conor Daly (GP 9, 11-12)
Tom Blomqvist (GP 10, 16-17)
Linus Lundqvist (GPs 13-15)
Rahal Letterman Lanigan Racing
Graham Rahal (GPs 1-5, 7-17)
Jack Harvey (GPs 1-14)
Conor Daly (GP 15)
Jüri Vips (GPs 16-17)
Christian Lundgaard
Katherine Legge
(GP 6)
Team Penske
Josef Newgarden
Scott McLaughlin
Will Power
Abel Motorsports
RC Enerson
(GP 6)
Dreyer & Reinbold Racing
Ryan Hunter-Reay
(GP 6)
Stefan Wilson (GP 6)
Graham Rahal (GP 6)