I would vote 4 years old on the first and 3 years old on the 2nd ram posted of Millers. Really only a few months into the 3rd year on that second one, hopefully some good growth to go the rest of the summer for him.
3 years old also on the one you can see well of BighornRams picture.
I just can't buy into those tiny growth rings for ages 3 and 4. Unless it had some type of an serious illness that lasted 2 years or there was an extremely terrible drought those are going to be a couple of really good growth years and he should be putting on several inches of horn at that age and not 1/4" each year.
Or maybe I'm missing the line for the first year. To me it looks like he had awesome growth in year 1 and 2 and then is still working on growing year 3.