So far:
 
GlancoJusticar 12  
Thelivingmachine02 5  
Ric-M 4  
John Joseco 4  
Megasweet 3  
Derpiihoves 3  
Ninjaham 3  
Sundown 3  
ManiacPaint 2  
Ross Irving 2  
Semehammer 2  
The Artrix 2  
Mauroz 2  
Shepherd0821 2  
Glasmond 2  
Scorpiordinance 2  
Cartoonlion 2  
X-Arielle, Gomigomipomi, Trinityinyang, Spindles, Ponideathmarch, Sallymon, Inkintime, Hazurasinner, Moronsonsofboron, Pluckyninja, Suikuzu, Atryl, Vasira, Apples 1
 
I’m not surprised to see Glanco on top.  
But there are some heavily under-appreciated artist there. Like Gomigomipomi, Sallymon, Hazurasinner and Suikuzu.
 
Seriously, guys?

Glancojusticar for me, hands down.

Cartoonlion, because I don’t particularly care for humanized MLPs in the first place. But Futashy is funny as hell, which matters more.

But I still keep forgetting some, for example ManiacPaint and Suikuzu…

Glanco is on the top, I think.  
With Ric-M, Gomigomipomi, Derpiihoves, MoritoAkira and HazuraSinner close seconds.  
Other good artists include John Joseco, Megasweet, Ninjaham and TLM02.

Derpii because he’s style of drawing appeals to my weeabooish self.JJ is too much sameface

@dt
 
Y’know, I’d probably put tcun above everyone if he(?) ever draws more from this show.

I have to say JohnJoseco, mostly because of his amazing art involving multiple humanized ponies

Ric-m.

Megasweet got me into humanized at all.

Hmmm, gotta say JJ. He was my first humanized artist that I remembered in a positive way. Keeps the essence of the show, but humanized.

Apples

Glanco, Sundown, Glasmond, Ninjaham, Theartix, Scorpiordance, Atryl, and Vasira are among my favorite humanization artist.

thelivingmachine02, Glanco and Ric-M are the names that pop up first; characters translated well and not sexualized is yay.

MEGASWEET

Shephard0182

Mauroz, derpiihooves, and suikuzu are really good. John Joseco is okay at times. I don’t like Glanco’s art that much. If anything, arucardPL’s and MoritoAkira’s are the cream of the crop in terms of humanized works.

Glanco and Maniacpaint more or less.

It’s difficult as even the worst have done some good images.
 
At a push i’d say pluckyninja is alright as is livingmachine02. Glanco is good as well. Too bad there’s so much to list but that’s a good thing right?
 
I prefer artists who can make a subject alluring (sp?) without it being dirty myself. If some rules are broken for sake of style i don’t mind too much.

Not sure who mine is.

REAL LIFE
 
idiots
 
Go watch anime for that dumb ass school shit

semehammer

everyone who can make a somewhat plausible humanization is ok in my book.

Do I even need to say it?
 

 
Ross FTW  
(Even if these designs are horrifically outdated)

Maniacpaint. Hands. Down.