I think flavor wise Templar wins hands down, it has the most cohesive identity and theme. When you say builds I'm assuming you mean the class in general based on the poll options? The Templar skill lines actually work together and most of the skills are usable (not BiS, but usable) plus you get some really powerful skills early on which a lot of classes don't.
The down side of that is that it isn't a very flexible class flavor wise, and it mixes poorly with a lot of non-class skills (in a flavor and visual way)
Sorc also has a really cool unique class identity.
Dk feels like it trying to be to many things at once. (each skill line feels completely separate)
NB has been nerfed into a flavorless blob of reddish glowing stuff (which is sad cause they have individually awesome skills)
Warden is all thing green and growing with cool pets and then BAM ice magic! (which is super cool but doesn't fit thematically at all imo)
Necro would be the absolute coolest with awesome unique class skills except it is a glitchy mess
Only have experience with Magplar and MagDK so far.
I found magplar to be fun and super easy, also very aesthetically pleasing in you like lots of flashy things going on all at once. It’s fun to use underground and in Coldharbour because every skill pops off the screen. Bonus points for running lightning staves because the mix of everything just fits thematically.
DK is a whole other animal once you get it fleshed out. There is fire magic, fire magic and some more fire magic. Paired with double destro fire staves there is even more fire. If fire is your thing than DK is your build. Is it too much fire? You bet your arse it is but when you wanna watch the world burn there is. I more powerful feeling than snaring a mob of enemies inside your blockade of fire and your eruption AOE and either snaring them again to watch them die slowly or putting them out of their misery by breathing fire in their face instead. It’s a powerful feeling, not as aesthetically pleasing as Templar but certainly a feeling of absolute power. I decide who does, when they die and how they meet their end. DK is Definitely a fun class to play but takes longer to fully flesh out than Templar which is pretty much ready to rock right out of the box once you get your first skill.