1 is a frosty, 2 is also a frosty (though they might be different shades - I think #2 is black based, not sure what 1 is based), 3 is an orange (vm?) and 4 is a chinchilla. I'd wait for them to grow a bit - especially with lionheads with their bald/dark side color
Also, if one of parents is an otter, then you might have a sallander marten and a fox for #2 & 3 instead of what I said