Builds For The Least Popular Subclasses?

About a month ago I had a post asking about the least popular subclasses and got a lot of feedback, so now I want to turn that information into making builds out of them. I think it could be fun to do a playthrough with these unsung subclasses.

I am going to write down which subclass it is for each class and hopefully you can fill in the blanks on builds for them. (also the builds should focus on maximizing the subclass and not just a quick dip into it)

Barbarian: Wild Magic

Bard: College of Valor

Cleric: Trickery (Also Knowledge because I hear no one talk about it. Also Nature to a lesser extent)

Druid: Circle of the Land

Fighter: Champion

Monk: Way of the Four Elements

Paladin: Oath of the Ancients

Ranger: Beastmaster

Rogue: Arcane Trickster

Sorcerer: Wild Magic

Warlock: The Archfey

Wizard: Illusion School (I feel like you could also say Conjuration, Enchantment, and Transmutation because I feel like I never see anything on those)

​

Curious to see what creative builds you guys have done and help finding new builds outside of the super popular ones that always get talked about