I just took a glimpse at
www.zophar.net/psf and found several new PSF2s:
Armored Core: Nexus (J) (PS2)
Curry House CoCo-Ichiban-ya: Kyoumo Genki da! Curry ga Umai!! (J) (PS2)
The Dodge Ball: World Champion Dodge Baller (J) (PS2)
Hissatsu Pachinko Station V8: Ninja Hattori-kun (J) (PS2)
Kaido Battle 2: Chain Reaction (J) (PS2)
Kusen 2 (J) (PS2)
Kuon (J) (PS2)
Mahjong Haou: Shinken Battle (J) (PS2)
Mahjong Party: Idol to Mahjong Shoubu (J) (PS2)
Marl de Jigsaw (J) (PS2)
Necchu! Professional Baseball 2004 (J) (PS2)
Net de Bomberman (J) (PS2)
Pop'n Taisen Puzzle-dama Online (J) (PS2)
Quiz & Variety: SukuSuku Inufuku (J) (PS2)
Rei-shiki Kanjou Sentouki (J) (PS2)
The Saiban: Shinmai Shihoukan Momoda Tsukasa no 10 no Saiban File (J) (PS2)
Taisen Hot Gimmick: Cosplay-Jong (J) (PS2)
I didn't look too closely, there might be more.
EDIT: There's been a recent adition:
Shin Megami Tensei 3: Nocturne (J) (PS2)