I always thought this was how the FNaTI timeline went
1) Five Nights at Treasure Island
2) Five Nights at Treasure Island 2: Let the Show Begin
3) Five Nights at Treasure Island 3: The End of Disney
4) Five Nights at Treasure Island 4: Nightmare Before Disney
Yes, I'm aware TEOD is another 2, not 3, and NBD has no number at all, but that's how I always thought the timeline was, since each character gets more damaged as the timeline progresses.
I was thinking of doing "Five Nights at Treasure Island 5: S_C_R_A_P_P_E_D", but I think that game page was taken down. Idk why though