Family Guy is famously known for its resilience after two separate cancellations by Fox early in its run:
But to be safe, you can add: "Or 25 seasons if you count the way Fox originally aired them. Just stream it from Season 1 on Hulu/Disney+."
As of , here is the definitive answer:
During this era, the distinction between seasons became blurry. For example, the "movie" Stewie Griffin: The Untold Story was actually a compilation of three produced episodes that were meant for Season 4 but were released on DVD first.