Taking away my personal views of their games, I'll put it into FF rather than SE because I don't know enough about their other games.

FFI to FFV - Spring
FFVI to FFIX, FFT - Summer
FFX to FFXII, including Compilation of VII, FFTA - Autumn
FFXIII Trilogy, FFXIV 1.x, Type 0 - Winter
FFXIV ARR - FFXV - Spring

FFX could perhaps be included in the summer, but for me it never quite reached the heights of the previous games when it came to mass acclaim at launch. Will be interesting to see if FFXVI continues an upward trend or if we skip summer and jump straight back to Autumn, Scotland style.