In what order the class stories should be played?

Hi guys! I recently returned to SW:TOR, I played it no launch but never got to far. I have an intention to play trough all of the class stories.

I've learned that class stories are interconnected a bit like a story from one class might have an additional details on what's going on the other class story.

I don't know much of the details because I don't want spoilers, but what do you think is the best order to play class stories in?

Just want to mention I started as a smuggler as my first story. I technically played as a sith inquisitor on launch got to a level around 30, but I do not remember much of a story.

Please if possible don't go into specific story details too much, I know the class stories are old, but for me It still will be a spoiler.