Greetings,
If I remember correctly, the Classical was the first variation of the Sicilian to be taught to chessplayers in the Soviet School.
It is, as noted earlier,
the classical Sicilian and is the one used to teach the thematic play in this vast defence.
Of those you've listed, Zatara, I agree with others who've suggested the Najdorf - it is the sharpest in the list; but requires vast amounts of study!
Your first port of call should be the Starting Out series of books:
Emms'
Starting Out: The Sicilian For more specialised coverage:
Palliser's
Starting Out: Sicilian Najdorf (also Emms'
Play the Najdorf, Scheveningen Style - more detailed is Cbess Star's
The Sharpest Sicilian, if you decide to commit yourself to studying it!)
Hellsten's
Starting Out: Sicilian Kan Greet's
Starting Out: Accelerated Dragon I can't think of a SO book on the Taimanov - but there's always
The Safest Sicilian from Chess Stars.
You could also look at Cox's
Starting Out: Sicilian Sveshnikov, which is topical at the moment - but mainly because he explores it as someone who's learning it for the first time.
The Easiest Sicilian from Chess Stars is a possible follow-up, if you decide on the Sveshnikov.
[Pritchett's
Starting Out: Sicilian Scheveningen and Raetsky's/Chetverik's
Starting Out: Classical Sicilian might also be of interest.]
Then get the latest editions of
Experts vs. The Sicilian and/or
Beating the Sicilian and go through them - see which way you like being put under pressure and how to deal with these critical lines!
That should give you enough to choose which one suits you.
Kindest regards,
Dragan Glas