The Millers Falls looks to be about the equivalent of a Stanley Bailey #3 which is a smooth plane about 8" long. It is a good plane and looks to be in really good shape. It might need to be sharpened/honed and the sole may need flattened, but it should be a very good working plane.
The red handled plane in the first pic looks to be about the size of a SB #5 (~14" long) which is a jack plane. It is probably a SB clone that was made by an unknown company using the same/similar design of the Stanley Bailey. It won't have the value of a SB, but a little cleaning and honing should make it a good user plane.
The block plane with the red cap is nothing special, but when sharpened is a handy size plane to have around. It might be a Stanley #102 or equivalent. It appears that the top of the lever cap is broken off on the other block plane which would make using it painful if not impossible to use. It looks similar to the Stanley #220. You could grind off the sharp edges of the broken cap and try to use it, but there are better block planes out there if you are looking for a good user.
I can't tell you much about the little wooded coffin plane, but if it were mine, I'd probably clean it up, sharpen the blade and see how it worked. If it doesn't work well for you, I'd just put it on a shelf for decoration.
The other wooden plane would be useful as well - as long as the profile on the iron is one you need for something.
Here are a couple of links for some more casual reading in case you don't already have them: Stanley Bailey plan
e types and some info on Millers Falls planes