The best tmnt artist by far would be
1) Kevin Eastman and Peter Laird as a duo art style is best when they compliment each others pencils and inks and combine both their drawings into one where you can't tell who drew what original classic stylized stereotypical turtles with squat beak designs from 1983 -1985 reminds me of underground comics and the art is best when they're together than apart not too much of a fan of their bulky circle head and leather belt style the 1990 movies adapted or the archie adventures series reuses in the characters style guide from the return to new york arch people call the " jim lawson turtles"
2) Richard Corben rendition of eastman and lairds tmnt designs in his realistic cartoonish underground heavy metal style
3) Glen Farby rare Italian cover realistic styleized tmnt reprint covers
4) A.C. Farleys realistic tmnt art style his lighting is superb
5) Paul Harmon tmnt Gang War arch realistic art work 
6) Michael Zuli bizarre rendition of the turtles with their carapace and plastron resembling a crab shell their reptilian appearance looking like a anthropromorphsized snapping turtle and the puma looking master splinter and it's Barry Windsor Smith stylized esque realism from out of Marvel presents weapon x or storm life death etc art style 
7) hate or love the liberal childhood property ruining transgender Ross aka sophie campbell their mirage art style for tmnt is superb
8) LeSean Thomas artist of boondocks and black dynamite, his Dreamwave tmnt 2003 stylized dynamic anime inspired art is an underrated master piece, drawing a fleshed out story for 2003 april and baxter stockman and the muted colors are awesome I like how he draws raphs sai and donatellos air poses or how he draws the turtles destroying mousers and turtle bots design
9) Hugh Haynes archie comics tmnt adventures 1995 year of the turtle mini series art style is underrated they shit on mighty morphin power rangers beating up power rangers knock offs the art style is inspired by the 87 show the 1990s movies and concludes the turtles story by restoring hamato yoshis humanity. They have a cool fight scene michael bay films probrably ripped off of the turtles surfing on their carapace down a Himalayan mountains
10) Peter Chungs concept art for the 1987 tmnt cartoon I wish they would've used and allowed them to adapt the mirage comics into a adult show like the mtv liquid television
the maxx or todd McFarlanes spawn for HBO or mtv spiredman animated series fox network like the flash TV show Dean cane superman or super boy back in the day imagine how the tmnt reception would've been if it was a prime time adult cartoon on late night TV pitched on liquid television or ran on HBO or scfi channel
