Dark Knight

This is just a very fun dark paladin (not necessarily evil though) smite build, roleplay wise and damage wise. Having the Warlock multiclass means you can bind your weapon for charisma proficiency damage and gives you two level two smites on short rest cooldowns, or any other utility spell you dont want to use a full slot for. The Bard multiclass gives you a nuclear option, letting you cast two level four smites in a single turn if you need to destroy something extremely quickly (not to mention stacking damage with hex, flourishes and the radiant damage gear), which can be in the realm of 130ish damage with some good rolls. Booming blade also gives you a great melee cantrip and eldritch blast with a charisma modifier bonus is a fantastic ranged option without consuming any slots. Finally, with armour of agathys and shield, as well as up to like 20 armour class or more, you can be extremely tanky. Add on Devil’s sight, freedom of movement and heroism, and you’re nigh unstoppable, unable to be cc’d in any meaningful way.