The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Konami Hardware ID (33 members)
- Konami Hardware ID's (2 members)
- Konami PLD's (92 members)
- Kyugo (1 member)
- Leland (4 members)
- Lloyd Research (1 member)
- Macintosh (67 members)
- Marble (1 member)
- Metro (3 members)
- Midway (21 members)
- Midway PLD's (45 members)
- Midway Y-Unit (5 members)
- NMK (1 member)
- Namco (45 members)
- Namco PLD's (14 members)
- Namco System 1 (5 members)
- Namco System 11 (11 members)
- Namco System FL (1 member)
- Need Better Picture (3 members)
- Nichibutsu (6 members)
- Nics (1 member)
- Nintendo (7 members)
- Not Working (0 members)
- PLD Datasheet (19 members)
- Pages with broken file links (1 member)
- Peni (1 member)
- Pinball (1 member)
- Playmark (2 members)
- Prototype (5 members)
- Psikyo (4 members)
- Rare (1 member)
- SEGA (96 members)
- SEGA Hardware ID (4 members)
- SEGA PLD's (89 members)
- SEGA ST-V (3 members)
- SEGA SYSTEM 16B (1 member)
- SEGA System 1 (5 members)
- SEGA System 16A (5 members)
- SEGA System 16B (8 members)
- SEGA System 18 (10 members)
- SEGA System 1A (2 members)
- SEGA System 2 (4 members)
- SEGA System 24 (1 member)
- SEGA System 32 (11 members)
- SEGA System C (1 member)
- SEGA System C2 (3 members)
- SEGA System M1 (2 members)
- SEGA System X (7 members)
- SETA (3 members)
- SNK (16 members)