That's because you need to produce all 3 as leader instead of any of them.
I get it. It makes sense since they unlock different things individually...can't believe I didn't think of it before I asked XD
Anyway, thanks for the info, BT2~ Going to link to this in the top post since it comes out a bit long:
Catalog 01Snowflake Lilypad: Complete the game with Yukiho in your unit.
The Best Schoolmate: Complete the game with Chihaya in your unit.
Fortune Clover (Floral): Complete the Extra Episode with Ritsuko.
Fire Opal 76ct. (Luxury): Complete the game with Miki in your unit.
PleadesM45 (Starry): Complete the game with Mami in your unit.
(accessories)Sports Bag & Warm Boots Cover: Reach Producer Rank 2.
Pretty Mittens: Reach Producer Rank 4.
Catalog 02Street Hopper: Complete the game with Hibiki in your unit.
Sakura Storm (Floral): Complete the game with Haruka in your unit.
Baby Blue Jaguar (Luxury): Complete the game with Makoto in your unit.
Puzzle Del Sol (Starry): Complete the Extra Episode with Ami.
(accessories)Chemical Light Collar: Reach Producer Rank 4.
Heartbeat Sunglasses & Chemical Light Anklet: Reach Producer Rank 5.
Catalog 03Burger Skater: Complete the game with Yayoi in your unit.
Saint Iris (Floral): Complete the Extra Episode with Iori.
Desert Traveler (Luxury): Complete the Extra Episode with Azusa.
Orion Nebula (Starry): Complete the game with Takane in your unit.
(accessories)Burger Headset, Burger Mitts, & Burger Kneepads: Complete the game on "Hyper" difficulty.