Perhaps instead of main/rare, you could distinguish them with canon/noncanon/not released or something. Here is the better list...
Main Zelda's Games/ Canon
1. The Legend of Zelda (NES)
2. Zelda II: The Adventure of Link (NES, Famicom)
3. A link to the past/ BS Triforce of the Gods (SNES, Satellaview)
4. Link's Awakening/DX (GB, GBC)
5. Ocarina of Time/ Master Quest/ 3DS (N84, GC, 3DS)
6. Majoras Mask (N84)
7. Oracle of Seasons (GBC)
8. Oracle of ages (GBC)
9. Four swords/A Link To The Past (GBA)
10. Wind Waker (GC)
11. Four Swords Adventures; USA (GC)
12. Navi's Tracker/Four Swords Adventures; Japan (GC)
13. Minish Cap (GBA)
14. Twilight Princess (GC, WII)
15. Zelda phantom hourglass (NDS)
16. Zelda Spirit Tracks (NDS)
17. Zelda skyward sword (WII)
Spin-off Zelda's Games/ Non Canon (rare)
1. Zelda Game and Watch
2. Zelda game watch
3. Link The Faces of Evil (CDI)
4. Zelda The Wand of Gamelon (CDI)
5. Zelda's Adventures (CDI)
6. BS Legend of Zelda (Satellaview)
7. BS Legend of Zelda Ancient Stone Tablets (Satellaview)
8. Links Crossbow Training (WII)
9. Tingles Balloon Fight DS (NDS)
10. Freshly Picked Tingle's Rosey Rupeeland (NDS)
11. Color Changing Tingle's Love Balloon Trip (NDS)
12. Too much Tingle Pact (NDS)
Cancelled/ Not Existence/ Demo
1. Zelda 2 (SNES)
2. Zelda 3 (SNES)
3. URA zelda
4. Zelda Mystical Seed of Courage (GBC)
5. Zelda triforce trilogy