Here is the official FIM entry list for the USGP.
MX1
2 NAGL MAXIMILIAN GER DMSB KTM
4 STRIJBOS KEVIN BEL FMB Suzuki
6 COPPINS JOSHUA NZL MNZ APRILIA
8 SWANEPOEL GARETH RSA MSA HONDA
9 DE DYCKER KEN BEL FMB YAMAHA
10 BOISSIERE ANTHONY FRA FFM TM
11 RAMON STEVE BEL FMB SUZUKI
12 GARRISON BOBBY USA AMA HUSQVARNA
14 DE REUVER MARC NED MUL SUZUKI
19 PHILIPPAERTS DAVID ITA FMI YAMAHA
22 GONCALVES RUI POR FMP KTM
25 DESALLE CLEMENT BEL FMB SUZUKI
34 PUGMIRE TRENT USA AMA
35 GOERKE MATT USA AMA YAMAHA
38 MARTENS YENTEL BEL MUL KTM
39 GUARNERI DAVIDE ITA FMI HONDA
40 LEOK TANEL EST EMF HONDA
46 SIPES RYAN USA AMA YAMAHA
52 WALKNER MATTHIAS AUT OeAMTC KTM
55 CHISOLM KYLE USA AMA YAMAHA
58 PEICK WESTON USA AMA YAMAHA
74 STEINBERGS IVO LAT LaMSF HONDA
75 WOUTS KEVIN BEL FMB KAWASAKI
90 POURCEL SEBASTIEN FRA FFM KAWASAKI
101 TOWNLEY BEN NZL AMA HONDA
105 HUGHES RYAN USA AMA HONDA
120 SOUBEYRAS CEDRIC FRA FFM KTM
121 BOOG XAVIER FRA FFM KAWASAKI
139 DIETRICH RICHARD USA AMA KAWASAKI
152 BALBI ANTONIO BRA AMA KAWASAKI
184 STAPLETON DENNIS USA AMA
204 GASSIN DAVID USA AMA YAMAHA
222 CAIROLI ANTONIO ITA FMI KTM
331 AUBIN NICOLAS FRA FFM KAWASAKI
616 PHENIX KYLE USA AMA
702 ALBERTSON JIMMY USA AMA HONDA
762 SOULE JUSTIN USA AMA KAWASAKI
771 WATSON DEVIN USA AMA
777 BOBRYSHEV EVGENY RUS ACU HONDA
800 ALESSI MIKE USA AMA KTM
MX2
1 MUSQUIN MARVIN FRA FFM KTM
11 SIMPSON SHAUN GBR ACU KTM
19 SMITKA PETR CZE ACCR KTM
21 PAULIN GAUTIER FRA MCM YAMAHA
23 TONUS ARNAUD SUI FMS SUZUKI
29 THACKER MICHAEL USA AMA HONDA
31 HUANG HENRY USA FMPR
34 ROELANTS JOËL BEL FMB KTM
37 TEILLET VALENTIN FRA FFM KTM
39 GRECO JOSH USA AMA
45 NICHOLLS JAKE GBR ACU KTM
61 FRIESE VINCE USA AMA YAMAHA
77 LUPINO ALESSANDRO ITA FMI YAMAHA
89 VAN HOREBEEK JEREMY BEL FMB KAWASAKI
91 KARRO MATISS LAT LaMSF
92 BATTIG ALESSANDRO ITA FMI HONDA
94 ROCZEN KEN GER DMSB SUZUKI
111 HERLINGS JEFFREY NED KNMV KTM
119 POCOCK MEL GBR ACU YAMAHA
133 TEDDER MYLES USA AMA KAWASAKI
148 ANSTIE MAX GBR AMA YAMAHA
151 KULLAS HARRI FIN SML YAMAHA
166 TEDDER DAKOTA USA AMA KAWASAKI
170 LEIB MICHAEL USA AMA KAWASAKI
183 FROSSARD STEVEN FRA FFM KAWASAKI
191 SEARLE TOMMY GBR AMA KTM
200 TICKLE BROC USA AMA YAMAHA
202 LARRIEU LOIC FRA FFM YAMAHA
335 VERBRUGGEN DENNIS BEL FMB KTM
338 OSBORNE ZACH USA ACU YAMAHA
577 DAVALOS MARTIN ECU AMA YAMAHA
585 BAKER TRAVIS USA AMA YAMAHA
824 KOUWENBERG NICK NED KNMV YAMAHA
871 MINOR JARED USA AMA
