Not story but screenplay wise...
Dhoom > Tiger Zinda Hai > Ek Tha Tiger > Dhoom 3 > Dhoom 2 > War
Dhoom 3 > War > Dhoom 2 > Ek Tha Tiger > Tiger Zinda Hai > Dhoom
Best Action Set Pieces
Dhoom > Dhoom 2 > Tiger Zinda Hai > Ek Tha Tiger > War > Dhoom 3
Regarding action sequences, Dhoom had the best conceived and executed ones. Followed by Dhoom 2.
Tiger Zinda Hai had better execution. Infact they weren't well conceived action set pieces but executed in a supreme way.
Ek Tha Tiger had better action sequences designed but since the duplicate was used throughout & the vfx was patchy, I wouldn't rank it higher.
War the only reason I keep low because all the good action set pieces was executed entirely flat. The low ranking only because every single action scene was terribly flat and it infuriated me considering you'll never get to cast the best ones again like Hrithik & Tiger when it comes to this genre.
Dhoom 3 well, the great cinematography didn't cover how much they "tried" not in a good way to look cool with the action set pieces which were anyways marred by drama.
Regarding cinematography, hands down Dhoom 3 had the best. War was superior but came out too artificial. or to say they over did it. Dhoom 2 well it was on a different level back in the day. Ek Tha Tiger is a personal preference as it turned to a love story so a happy space unlike bringing in action mode in every frame, probably the reason why TZH is ranked below.