Looking so far..
Williams - Dropped the Mercedes idea of last year in favour of a conventional Red Bull clone.
Alpha Tauri - Evolution of last year
Haas - The 2022 Ferrari had a baby
Alpha Romeo - As expected, the love child of the Red Bull and Ferrari.
McLaren - Strangely, less agressive than last year's. A devolution of last year. Not really sure where they've gone here but they might have needed the room.
Aston - Much more developed rear and very agressive sidepod. Most agressive so far.
As for for livery..
1) Aston
2) Red Bull
3) Alpha Romeo
4) McLaren
5) Haas
6) Williams
If there is a team hiding something for testing, i suspect it's McLaren.