To make things easy we simply refer to them as ‘shore birds’.
The bigger Black-necked Stilt stands out, the rest are so similar most times they look alike.
However, here there is 2 types of birds here, though the same family.
The brown birds are both Greater Yellowlegs, and Lesser Yellowlegs.
Lesser having a shorter bill, by half. But really unless you know what to look for, and have the other species close by, how could you tell.