The small tanks are M1A1's HMG armed stewarts/Honeys
The M1 and M2 were not called "Stuart" or "Honey", but "Combat Car". Stuart/Honey was the name given to the M3/M5 series by the British, who received large numbers of it under the lend and lease treaty. Interestingly enough, until the advent of the M-26 Pershing and Patton tanks, the US military did not officially name their vehicles, so the names associated with the various earlier types are a British creation.