[5] Winning the FR Americas title awarded Kyffin with a Honda Performance Development scholarship fund worth $600,000 towards a Super Formula campaign in 2022, but Japan’s ongoing travel restrictions due to COVID-19 prevented these plans coming to fruition.

[7] In 2022, Simpson signed a multi-year deal as a development driver with Chip Ganassi Racing, whilst also progressing to Indy Lights, partnering James Roe Jr. at TJ Speed Motorsports.

[10][11] Alongside his Indy Lights duties, Simpson made his IMSA SportsCar Championship debut with Gradient Racing at the wheel of an Acura NSX GT3 EVO II at the 2022 24 Hours of Daytona.

[19] Race one at the Yas Marina Circuit saw Simpson battling the experienced Oliver Jarvis for a podium spot, however he would take himself out of contention owing to a spin into the turn 16 wall mere minutes before the end.

[23] An unspectacular maiden race in Barcelona was followed by a markedly improved showing at the Circuit Paul Ricard, where Simpson's ability to stay close to leader Vladislav Lomko throughout the opening stints - exemplified by the Bajan setting the race's fastest lap - enabled teammates Lynn and Allen to get embroiled in the battle for victory, with the latter executing a late-race pass on Louis Delétraz to bring first place to APR.

[25] In January 2023, Kyffin completed his first NTT IndyCar Series test with Chip Ganassi Racing at Sebring International Raceway.