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I think it's designed to be legal in Chicago
Boom. Spyderco Chicago, made to be legal in Chicago!
Out of existing folders I'd get the Spyderco Chicago, it fits your description best IMO.
Option #2 is one of those Cali legal auto knives, like this SOG.
And there is the option of getting a budget knife and chopping the blade to fit the requirements.
A knife designed especially for you Chicagoans!