Who's Included?
At this point the database is far from complete. These are the groups and soloists currently included. To begin with I chose groups on whatever whims--groups that I like, or that had just a little content to add, were connected to groups I'd already added in, whatever. Now I'm going a bit more methodically, working on groups approximately by time of debut. I'm perfectly willing to bump up a group/person if requested, though.
Currently Included
People
Artist Debut Year
Heike Michiyo 1997-11
Nakazawa Yuko 1998-08
Miyoshi Chinatsu 1999-08
Maeda Yuki 2000-04
Ishii Rika 2000-10
Goto Maki 2001-03
Matsuura Aya 2001-04
Fujimoto Miki 2002-03
Iida Kaori 2003-04
Abe Natsumi 2003-05
Ichii Sayaka 2003-09
Kusumi Koharu 2006-07
Takahashi Ai 2006-07
Tsuji Nozomi 2007-05
Mano Erina 2008-06
Okai Chisato 2010-11
Kamei Eri 2010-12
Niigaki Risa 2010-12
Tanaka Reina 2010-12
Tsugunaga Momoko 2010-12
Yajima Maimi 2010-12
Suzuki Airi 2010-12
Natsuyaki Miyabi 2011-03
Groups
Artist Debut Year
Morning Musume (and Sakura, Otome, Tanjou, Afternoon, Dream) 1997
Tanpopo 1998
T&C Bomber 1999
Coconuts Musume 1999
Petitmoni 1999
Melon Kinenbi 1999
Country Musume 1999
Akagumi 4, Kiiro 5, Aoiro 7 2000
Sheki-Dol 2000
3nin Matsuri, 7nin Matsuri, 10nin Matsuri 2001
Minimoni 2001
Ichii Sayaka in CUBIC-CROSS 2002
Happy♡7, Sexy 8, Odoru♡11 2002
Gomattou 2002
SALT5, 7AIR, 11WATER 2003
ZYX 2003
Aa! 2003
ROMANS 2003
Berryz Koubou 2004
W 2004
v-u-den 2004
Nochiura Natsumi 2004
Ecomoni 2004
H.P. All Stars 2004
Sexy Otonajan, Elegies, Puripuri Pink 2005
DEF.DIVA 2005
Tomoiki Ki wo Uetai 2005
℃-ute 2005
GAM 2006
Buono! 2007
Kira☆Pika 2007
Ongaku Gatas 2007
Athena & Robikerottsu 2007
MilkyWay 2008
High-King 2008
SHIPS 2008
Shugo Chara Egg 2008
Ice Creamusume 2008
Guardians 4 2009
S/mileage 2009
Lilpri 2010
Reborn Eleven 2011
ALMA KAMANIITO, Peaberry, Harvest, DIY♡, GREEN FIELDS, JURIN 2012-2013
Juice=Juice 2013
Dia Lady, HI-FIN, Mellowquad 2013

Next in line...
Artist Debut Year
Yaguchi Mari 2009-03
Kago Ai 2009-06
Sugaya Risako 2010-10
Ohtani Masae 2011-01
Shibata Ayumi 2011-09
Miyamoto Karin 2011-12
Kobayashi Azusa 2013-09

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