The 30-year-old Rossi from Nevada City, California, is set to join Arrow McLaren SP on a multiyear basis following seven full-time season at Andretti Autosport.
The 23-year-old Kirkwood from Jupiter, Florida, is set to replace Alexander Rossi as the driver of the No. 27 Andretti Autosport Dallara-Honda for the 2023 NTT IndyCar Series season.
The 31-year-old Ericsson from Kumla, Sweden, led three times for 13 of 200 laps before fending off Pato O'Ward in a two-lap shootout to claim his first Indy 500 title.
The third-generation Andretti driver from Nazareth, Pennsylvania, is primed to reach a milestone start in his 17th consecutive appearance in the Indianapolis 500.
The 22-year-old Herta from Valencia, Santa Clarita, California, led three times for a race-high 50 of 75 laps to claim his first IndyCar victory of the season at Indy's road course amid slick conditions,
The two-time IndyCar champion from Hendersonville, Tennessee, benefitted through an executed pit strategy before prevailing over late challenges from Romain Grosjean and Alex Palou to notch his first elusive victory at the Streets of Long Beach.