I think you are confusing something here. The item table in the DMG is per party not per player character.Per PC according to the DMG.
Level 1-4 the party should receive: 1 Rare, 3 uncommon, 6 common. Half of the items consumables
Level 5-10 the party should receive: 6 Rare, 17 Uncommon, 10 common (again half consumables)







