Lord Paladin
High Paladin
Paladin
Lord
Baron/Baroness
Knight/Dame
Squire
Page
Peasant
I'm not sure these ranks are proper for a Paladin Guild. Why? Because these ranks barely refer to the lawful, good nature of Paladins, rather to a lordship hierarchy. If it's a Paladin guild, it should be composed of Paladins and those striving to become such, not mainly Peasants and Lords, and the other non-Paladin ranks that outweight.
I wouldn't join your guild, seeing that I would be called a peasant by people who should treat me with honor and goodness. I'd admit being called recruit, Page and Squire, not a peasant. Plus, I would be demotivated also by the high hierarchic rank it takes to be a Paladin. One would think it would take much effort to become a true Paladin. However climbing in hierarchic level, and nobility level as it seems, doesn't seem to fit. Paladins can be charismatic leaders, or charismatic lone fighters. All they need to be is heroic, not go around commanding others at their whims.