For me I think I pick Max as the best, Leclerc as the most improved, Kubica as the worse, and Seb as the most disappointing.
For team, obviously Merc as the best, McLaren as the most improved, Williams as the worse, and Ferrari the most disappointing.
This year real hard to choose, Ferrari's monster straight-line speed but pussy in cornering. Mercedes actually seems not very fast but the team execution (strategy + problem fixing) makes it looking the best. Feels like Red Bull actually picking up this year on consistent pace, Verstappen's accident + errors costed them a few potential wins.