All white cast:
3 Minute Max
Always Raining Here
The Androssian Prophecy
The Beast Legion
Blade Bunny
Broodhollow
Carciphona
Council of Crime Fighters
The Challenges of Zona
The Cummoner
Data Chasers
Demon of the Underground
Eternal Knights
Exiern
Flipside
Gaia
Giant Girl Adventures
The Great Isle of Prentil
The Green-Eyed Sniper
Judecca
Kikonrar
Luna Star
Mecoforie
The Meek
Misfile
Not a Villain
A Redtail's Dream
Replay
Shadowbinders
Shotgun Shuffle
Sluggy Freelance
Spindrift
Spying with Lana
Stand Still Stay Silent
Stereophonic
Stick in the Mud
Supervillainous
Transfusions
Vultures
WhiteOut
Year in Hereafter
YeasterdayBound

Diverse Cast:
Algorithm
Asylum Squad
Avialae
Blaster Nation
Blindsprings
Depression Comix
Derelict
Dumbing Of Age
El Goonish Shive
The End
Espaced
Flaky Pastry
Girl Genius
Girls With Slingshots
Godslave
Go Get A Roomie!
Grrl Power
Gunnerkrigg Court
Headless Bliss
Henchgirl
Hero Oh Hero
The Hues
Ignition Zero
Iothera
Kill Six Billion Demons
Mare Internum
Menage a 3
Mias & Elle
Monster Pulse
Namesake
Negative One
No End
Oglaf
O Human Star
Out of my Element
Overeyes
Parasite Galaxy
Prague Race
Puck
Questionable Content
The Quick and Dirty Life of Fritz Fargo
The Rock Cocks
Runewriters
Sakana
Sam & Fuzzy
Sandra & Woo
Scrub Diving
Sins Fugue
Skeptical
Skin Deep
Snow by Night
StarHammer
Strong Female Protagonist
Sunset Grill
Thistil Mistil Kistil
Too Much Information
Trial of the Sun
Tripping Over You
Unsounded
The Whys
Widdershins
Wilde Life
Witchy
Worlds Apart

Ambiguous:
Alfie
Astral Avas
Ava's Demon
The Boy Who Fell
By The Book
The Crease
Delve
The Dreamland Chronicles
Earthsong
Engelbaum
Eth's Skin
Freefall
Goblins
The Last Halloween
Miamaska
Merceneiress
Monsterkind
The Monster Under the Bed
Schlock Mercenary
Snarlbear
Two Kinds
Wapsi Square
Will Save the World for Gold
xkcd