Warrior: 6+con HP per level.
1 saving throw, 2 skills, weapons and armor and shields
3 second wind
5 second saving throw
8 +1 AC
10 extra attack(2)
15 19-20 critical
20 extra attack(3)
Expert: 5+con HP per level
1 saving throw, 4 skills, 1 expertise
3 cunning action
5 second saving throw, expertise
8 aid another gives +1d4
10 +1d8 damage per-turn
15 expertise
20 +2d8 damage per-turn
Spellcaster: 4+con HP per level
1 saving throw, 2 skills, 2 cantrips, 1st level slot
3 2nd level slot
5 second saving throw
6 3rd level slot
9 4th level slot
12 5th level slot
15 6th level slot
18 7th level slot
Spells known = 2 + Level/2 (round down)