Just now getting into it, the class preview in character creation doesn't show you as much. There's an addition preview, but it doesn't take archetypes into account which makes it not very useful.
Paladins can now pick up a mount instead of enhance weapons for their Divine Bond. The two archetypes are the Martyr and the Warrior of the Holy Light. The former gets Bard abilities and more support, the latter trades in spells for more Lay on Hands uses and an aoe buff.
Druid archetype is the Drovier, which is forced into taking the Animal Companion Nature Bond (notably different than PnP) and trades in Wild Shape for the ability to buff allies with aspect spells.
Base Skalds are going to be better than Bards at melee heavy groups and can share Barbarian Rage Powers, but not very great with mixed or spellcaster heavy groups as their base song disables spellcasting. They can fight better than Bards though. Battle Scion can pick up bonus feats instead of Rage Powers and share them. Court Poet buffs Intelligence and Charisma instead of melee ability, which makes it better for Arcane heavy groups and not very good for martial heavy or mixed groups. Demon Dancer can give allies demon abilities instead of picking up the first three rage powers. Herald of the Horn gets Arcane Bond (extra spell per day) and boosts for Sonic spells. Hunt Caller has some Druid abilities, unlike PnP ability to turn party members into animals doesn't show up.
Warpriest looks like a pretty solid Fighter/Cleric combo, it's got good proficiencies, enough bonus feats to easily carve out a fighting style, decent spellcasting, can enhance both weapons and armor, and can heal on demand with Fervor. One notable difference from PnP is that Fervor can't be used to quicken spells, which is a pretty big nerf but not a damning one. Champion of the Faith can smite instead of channel energy, doesn't look to lose out on the first bonus feat, but does lose out on the ability to enhance their weapons. Cult Leader trades out proficiencies and bonus feats for sneak attack. Disenchanter gets to be good as dispelling stuff and instead of combat feats gets stuff that helps them on saves or dispelling. Feral Champion gets to grow claws and wildshape instead of enhance armor. Proclaimer can damage evil outsiders instead of heal with Fervor. Shieldbearer is a shield bash specialist and most abilities revolve around shields instead of weapons or armor.