Hands down is foster home for imaginary friends and flapjack.

Courage

EEnE
KnD
Foster's Home
Grim Adventure
Regular Show
Adventure Time
Cow n Chicken
etc

flapjack
regular show
courage

too many

gumball

Ed Edd n Eddy can be on repeat any day of the year and I’m locked in lil it’s the 40s and I chopped it with my bookie

Best modern cartoon.

Courage the Cowardly Dog
Kids Next Door
Regular Show

chowder
flapjack
total drama island
fosters
dexter's lab
knd
courage
ed edd n eddy

My top 15 (in no particular order)

Samurai Jack
Megas XLR
Ben 10 (the original cartoon)
Ben 10: Alien Force
Fosters Home for Imaginary Friends
The Life and Times of Juniper Lee
Star Wars: The Clone Wars
Regular Show
Chowder
Adventure Time
Chop Socky Chooks
The Grim Adventures of Billy and Mandy
Courage the Cowardly Dog
Cow 'n Chicken
The Marvelous Misadventures of Flapjack

The way they ended this really changes how you look at the show as a whole

Justice League Unlimited

Dexter's Lab
PPG
Adventure Time
Courage
Ed Edd n Eddy
Steven Universe

2 Stupid Dogs

Courage the Cowardly Dog, Edd Ed Eddy & Billy n Mandy top 3 no contest

Argue with your wife

I don't remember how it ended so I'm gonna have to look into what you mean lol

Kids next door
Billy and Mandy
Courage
Ed Edd and Eddy
Johnny Bravo
Dexter's lab
Cow and Chicken

Underrated: Camp Lazlo

Flapjack

Literally the GOAT

Add Powerpuff Girls, Courage and Samurai Jack to this

I have no recollection of Cow n Chicken

Real as f*** for flapjack

Holy f*** I forgot about camp lazlo