Non Immigrant visas are temporary visas i.e the person who obtains such visa shall depart the US within the prescribed period of time.
Non-Immigrant Visa Types:
Working Visas: H-1B, L-1, R-1 etc., based upon the working category.
Dependent Visas: H-4 visa for spouse and kids.
Touring Visas: B-2 visa for tourists (e.g: parents of H-1B holder).
Business Visas: B-1 visa for business visitors (short term visa for analyzing projects or business).
Educational Visas: F-1, M-1, for students based upon the educational category.
Non-Immigrant visas are issued at the US Embassies and Consulates of the country where you reside.
Immigrant Visa