I've seen two 5e campaigns, but a revolving cast of PCs. So far there have been: Sorcerer 9, Fighter 9, Barbarian 9 (twice!), Cleric 9, Warlock (Talisman) 8 / Cleric 1, Paladin 6 / Warlock (Tome) 3, Druid 9, Rogue 9, Artificer 8, Rogue 6 / Druid 2, Fighter 3 / Rogue (AT) 5, Bard 8, Cleric 7...