What are the most common types of non-immigrant US business visa?

B-1 Visas for Business Visitors
E-1 Visas for Treaty Traders
E-2 Visas for Treaty Investors
F-1 Visas for Foreign Students
H1-B Visas for “Specialty Occupation” Employees
L-1 Visas for Intercompany Transfers
J-1 Exchange Visitors
O-1 Visas for Extraordinary Ability
TN (NAFTA) Visas for Mexican and Canadian Citizens