How can I know if an anime is episodic or has a continuous plot? I keep searching for a website or forum that can classify an anime as episodic without reading reviews or plots (because I really hate spoilers), but I couldn't find any.

Is there a way to know if a series is episodic in nature much like Samurai Champloo or Gintama where each episode has a stand-alone story or if it has a continuous plot across all episodes like Bleach or Naruto?
Anime-Planet has an episodic tag which gives you what you want. AniList and AniDB also have their own episodic tag. ANN, MAL and Kitsu don't seem to provide this feature as far as I know.