| 2 |
 Josef Newgarden |
22 Dec 1990 |
Team Penske |
Dallara DW12 (IR18) - Chevrolet |
FI | 18 | |
| 3 |
 Scott McLaughlin |
10 Jun 1993 |
Team Penske |
Dallara DW12 (IR18) - Chevrolet |
FI | 18 | |
| 12 |
 Will Power |
1 Mar 1979 |
Team Penske |
Dallara DW12 (IR18) - Chevrolet |
FI | 17 | |
| 4 |
 Kyffin Simpson |
9 Oct 2004 |
Chip Ganassi Racing |
Dallara DW12 (IR18) - Honda |
FI | 17 | |
| 8 |
 Linus Lundqvist |
26 Mar 1999 |
Chip Ganassi Racing |
Dallara DW12 (IR18) - Honda |
FI | 18 | |
| 9 |
Scott Dixon |
22 Jul 1980 |
Chip Ganassi Racing |
Dallara DW12 (IR18) - Honda |
FI | 17 | |
| 10 |
 Alex Palou |
1 Apr 1997 |
Chip Ganassi Racing |
Dallara DW12 (IR18) - Honda |
FI | 18 | |
| 11 |
Marcus Armstrong |
29 Jul 2000 |
Chip Ganassi Racing |
Dallara DW12 (IR18) - Honda |
FI | 18 | |
| 5 |
 Patricio O'Ward |
6 May 1999 |
 McLaren |
Dallara DW12 (IR18) - Chevrolet |
FI | 17 | |
| 6 |
Callum Ilott |
11 Nov 1998 |
McLaren |
Dallara DW12 (IR18) - Chevrolet |
FI | 2 | |
| 6 |
 Théo Pourchaire |
20 Aug 2003 |
McLaren |
Dallara DW12 (IR18) - Chevrolet |
FI | 6 | |
| 6 |
Nolan Siegel |
8 Nov 2004 |
McLaren |
Dallara DW12 (IR18) - Chevrolet |
FI | 10 | |
| 7 |
Alexander Rossi |
25 Sep 1991 |
McLaren |
Dallara DW12 (IR18) - Chevrolet |
FI | 17 | |
| 17 |
Kyle Larson |
31 Jul 1992 |
McLaren |
Dallara DW12 (IR18) - Chevrolet |
FI | 1 | |
| 06/66 |
 Helio Castroneves |
10 May 1971 |
Meyer Shank Racing |
Dallara DW12 (IR18) - Honda |
FI | 3 | |
| 60 |
Felix Rosenqvist |
7 Nov 1991 |
Meyer Shank Racing |
Dallara DW12 (IR18) - Honda |
FI | 18 | |
| 66 |
Tom Blomqvist |
30 Nov 1993 |
Meyer Shank Racing |
Dallara DW12 (IR18) - Honda |
FI | 5 | |
| 66 |
 David Malukas |
27 Sep 2001 |
Meyer Shank Racing |
Dallara DW12 (IR18) - Honda |
FI | 10 | |
| 14 |
Santino Ferrucci |
31 May 1998 |
A.J. Foyt Enterprises |
Dallara DW12 (IR18) - Chevrolet |
FI | 17 | |
| 41 |
Sting Ray Robb |
3 Sep 2001 |
A.J. Foyt Enterprises |
Dallara DW12 (IR18) - Chevrolet |
FI | 17 | |
| 15 |
Graham Rahal |
4 Jan 1989 |
Rahal Letterman Lanigan Racing |
Dallara DW12 (IR18) - Honda |
FI | 18 | |
| 30 |
Pietro Fittipaldi |
25 Jun 1996 |
Rahal Letterman Lanigan Racing |
Dallara DW12 (IR18) - Honda |
FI | 18 | |
| 45 |
 Christian Lundgaard |
23 Jul 2001 |
Rahal Letterman Lanigan Racing |
Dallara DW12 (IR18) - Honda |
FI | 18 | |
| 75 |
 Takuma Sato |
20 Jan 1977 |
Rahal Letterman Lanigan Racing |
Dallara DW12 (IR18) - Honda |
FI | 1 | |
| 75 |
 Juri Vips |
10 Aug 2000 |
Rahal Letterman Lanigan Racing |
Dallara DW12 (IR18) - Honda |
FI | 1 | |
| 18 |
Jack Harvey |
15 Apr 1993 |
Dale Coyne Racing |
Dallara DW12 (IR18) - Honda |
FI | 14 | |
| 18 |
Conor Daly |
17 Dec 1991 |
Dale Coyne Racing |
Dallara DW12 (IR18) - Honda |
FI | 1 | |
| 18 |
Hunter McElrea |
21 Nov 1999 |
Dale Coyne Racing |
Dallara DW12 (IR18) - Honda |
FI | 1 | |
| 18/51 |
Nolan Siegel |
8 Nov 2004 |
Dale Coyne Racing |
Dallara DW12 (IR18) - Honda |
FI | 1 | |
| 51 |
Colin Braun |
22 Sep 1988 |
Dale Coyne Racing |
Dallara DW12 (IR18) - Honda |
FI | 1 | |
| 51 |
 Luca Ghiotto |
24 Feb 1995 |
Dale Coyne Racing |
Dallara DW12 (IR18) - Honda |
FI | 4 | |
| 51 |
Katherine Legge |
12 Jul 1980 |
Dale Coyne Racing |
Dallara DW12 (IR18) - Honda |
FI | 7 | |
| 51 |
Tristan Vautier |
22 Aug 1989 |
Dale Coyne Racing |
Dallara DW12 (IR18) - Honda |
FI | 1 | |
| 51 |
Toby Sowery |
30 Jun 1996 |
Dale Coyne Racing |
Dallara DW12 (IR18) - Honda |
FI | 3 | |
| 20 |
Ed Carpenter |
3 Mar 1981 |
Ed Carpenter Racing |
Dallara DW12 (IR18) - Chevrolet |
FI | 4 | |
| 20/33 |
Christian Rasmussen |
29 Jun 2000 |
Ed Carpenter Racing |
Dallara DW12 (IR18) - Chevrolet |
FI | 14 | |
| 21 |
 Rinus VeeKay (Van Kalmthout) |
11 Sep 2000 |
Ed Carpenter Racing |
Dallara DW12 (IR18) - Chevrolet |
FI | 17 | |
| 23 |
Ryan Hunter-Reay |
17 Dec 1980 |
Dreyer & Reinbold Racing |
Dallara DW12 (IR18) - Chevrolet |
FI | 1 | |
| 24 |
Conor Daly |
17 Dec 1991 |
Dreyer & Reinbold Racing |
Dallara DW12 (IR18) - Chevrolet |
FI | 1 | |
| 26 |
Colton Herta |
30 Mar 2000 |
Andretti Global |
Dallara DW12 (IR18) - Honda |
FI | 18 | |
| 27 |
Kyle Kirkwood |
19 Oct 1998 |
Andretti Global |
Dallara DW12 (IR18) - Honda |
FI | 17 | |
| 28 |
Marcus Ericsson |
2 Sep 1990 |
Andretti Global |
Dallara DW12 (IR18) - Honda |
FI | 17 | |
| 98 |
Marco Andretti |
13 Mar 1987 |
Andretti Global |
Dallara DW12 (IR18) - Honda |
FI | 1 | |
| 77 |
 Romain Grosjean |
17 Apr 1986 |
Juncos Hollinger Racing |
Dallara DW12 (IR18) - Chevrolet |
FI | 17 | |
| 78 |
 Agustín Canapino |
19 Jan 1990 |
Juncos Hollinger Racing |
Dallara DW12 (IR18) - Chevrolet |
FI | 12 | |
| 78 |
Nolan Siegel |
8 Nov 2004 |
Juncos Hollinger Racing |
Dallara DW12 (IR18) - Chevrolet |
FI | 1 | |
| 78 |
Conor Daly |
17 Dec 1991 |
Juncos Hollinger Racing |
Dallara DW12 (IR18) - Chevrolet |
FI | 5 | |