I know this is an odd question, but I want to learn more about the manga industry. I noticed many people pay attention to "JUMP Weekly" a lot, Mainly cause of Dragon Ball, One Piece, Naruto, Bleach, etc, I want to focus on other manga magazines and read what huge hit series they sold over the years.
Here are the manga magazine I want to learn more about:

-Shounen Gangan
-Young GanGan
-Ultra Jump
-Weekly Young Jump
-Young Sunday
-Young Magazine
-Weekly Shonen Magazine
-Shounen Sunday
-Big Comic Spirits
-Jump SQ
-Weekly Shōnen Champion
-Young Ace
-Shounen A
-Morning magazine

Now for what type of series I like to read:
-Action/adventure
-Slice of life
-Mystery
-Psychological
-Fantasy
-Supernatural
-Old school 80s and 90s

Care to help me out?


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Hayate no Gotoku!
Kami nomi zo shiru sekai
High-school DxD
Papa no Iu Koto o Kikinasai!
Yamada-kun to 7-nin no majo
Soul Eater
Fairy Tail
After typing till here I realized that you asked for completed series
But I was too lazy to delete all this
Here are some completed ones
Love Hina Weekly Shonen Magazine
Cage of Eden Weekly Shonen Magazine (this meets all your requirements)

Both good for adventure/mystery
Elfen Lied was on Weekly Young Jump.
Vampire Juujikai was on Shounen GanGan.

GTO was on Weekly Shōnen Champion. Don't know if we can call it old school 90's...

On Big Comic Spirits there were a few of Urasawa Naoki manga (I believe 20th, Happy!, Yawara and Master Keaton, not totally sure though). Also D-Ash should fit.

And one of my favorite slice of life was Mahoraba, which was on Gangan Wing. You didn't mentioned it but you mentioned other Gangan so I thought it was worth mentioning.

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What I like in Trivial Pursuit style. Pick your category:

One of the most prolific and popular Shounen Sunday authors appears to be Mitsuru Adachi. Adachi's speciality is sports mixed with school comedy though, I'm not sure if his manga fits your tastes. Anyway, the '80s series Touch is considered to be the creator's most famous work. Also Rough, H2, Katsu!, Cross Game and a couple of his shorter series are completely translated.

to lazy to think of any except for medaka box not everyone's cup of tea

Medaka Box is WSJ.

Sorry, I'm trying my best to avoid WSJ series for the time being.

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In his defense, Medaka Box is a little different to most series. It's written by NisioisiN.
In his prosecution: Read the OP.
Kyou kara Ore wa!!
Really you should check out all of his stuff. The guy is hilarious.

Shounen Gangan and Gangan online:
Zetsuen no Tempest (nearly completing) and Spiral
Daily Lives of High School Boys (I feel its popularity set the ground for some later SOL shounen manga by this publisher)

Morning: ES, Haruka 17, Hatsukanezumi no Jikan, Hataraki Man, Psycho Doctor Kai Kyousuke. Some of them might not be scanlated but were adapted to live action TV dramas/movies.

Big Comic Spirits: 20 Seiki Shounen, Bambino!, Homunculus, Maison Ikkoku.

Young Ace: Usotsuki Mi-kun to Kowareta Ma-chan: Totteoki no Uso, Another

Weekly Young Jump: B Gata H Kei, Blue Heaven, Girl Friend, Shikeishuu 042, Skyhigh series.

Last edited by coffee_11 at 7:29 am, May 26 2013

Shounen Gan gan- Peace maker, Fullmetal alchemist, Vampire juuji kai, Spiral: suiri no kizuna, Violinist of hameln, [m]Matentei loki[/m]

Young gangan-Ubel blatt, Mononoke, Hohzuki island, Until death do us part

Gangan joker-Sengoku strays

Ultra jump- Agharta, Hells angels, Dogs

Big comics spirit- Gyo, Uzumaki, Kurosagi

Weekly shounen magazine-Tsubasa reservoir chronicles, Bloody monday, Rave master, (Samurai deeper kyo, Psychometrer eiji and GetBackers are also popular, never read them) and second Cage of eden

Morning-Planetes

Shounen Ace-Samurai champloo, S-cry-ed, Blood +

Young Ace-Kurosagi corpse delivery service

Jump sq-Shiki

Shounen sunday-The drifting classroom, Spriggan, Flame of recca, Inuyasha, Wild life, Kekkaishi

Young magazine-3x3 eyes, Akira, Xxxholic