If your brother already chose druid it would be nice if you get knight so you can block for him and he can heal you (that would be a perfect duo if you 2 have the plans of playing together almost everytime) every time) knights and druids are always requested to team hunts or duo hunts so if one of you can play you can both find someone else to hunt easily...
easily.
Paladin and sorcerers are more like solo hunters, paladins hunters. Paladins having more profit than mages at the lowers lvls, lvls but 2 low level mages can’t do much damage without an knight (at least not until you can use runes and have some spells)... paladin spells). Paladin and a druid could be good it almost same as an knight in blocking creatures and can use range arrows and spells...spells.