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I'd agree with Semipalmated even though they're rarer than Leasts. Audobon's http://www.aba.org/birding/v40n4p40w1.pd... may be helpful in trying to distinguish what you saw (the easterly examples are nearer the back of that document) but both the leg color and what I can see of the toes support Semipalmated.
The red 'ear' is a giveaway of pumpkinseeds (as well as redear sunfish, which lack the pumpkinseed's vividly-contrasting stippling and striped face).
