Tsumagomi Izumo + Yaeda Nagumo 2 aliases used for teen comics since 1999. Many tankoubon (10?) but the more recent have left the loli side behind. Doujin Nhentai
Kawamoto Yoshiki Starting in 1998 they made several super cartoon-y loli tankoubons, until quitting in 2009. Doujin Nhentai
Araki Akira One of longest running lolicon artists that is still putting stuff out. While the style is still simple over the years, his output is incredible. Doujin 300+ 1986 Start Nhentai 210+ Tank 28 English 15+ Popular 400+ ImHent 190+