I must say that whilst he isn't as visually singular as, say, Tim Burton, I don't fully agree. Broadly speaking I divide the Spielberg back catalogue into three eras:

1. Golden era - The bubblegum blockbuster era. Jaws, Close Encounters of the Third Kind, Raiders of the Lost Ark, E.T. The Extra Terrestrial, Jurassic Park, etc. Plenty of trademark dolly shots that really mark out his style for this era.

2. Coming of age era - More "adult" projects like Schindler's List, Saving Private Ryan, Amistad, AI: Artificial Intelligence, Catch Me If You Can, Munich, etc. Janusz Kaminski takes over on cinematography duties on all films, giving them a kind of luminescent signature. Dolly shots often eschewed in favour of hand-held work on films like Saving Private Ryan, Schindler's List, etc.

3. "Grandfather" era - Films skewing young - The Adventures of Tintin: The Secret of the Unicorn, War Horse, The BFG, Ready Player One - which feature more of the Golden era dolly shots, and plenty of cinematic "showing off" (think that extraordinary unbroken single shot motorbike chase in Tintin, for instance), and sedate, elder statesman films like The Post, Bridge of Spies, and Lincoln, which feature more "restrained", unshowy camerawork. Kaminski's signature look still dominates, Tintin notwithstanding.