Given the coloring and the dark feet, plus I think I see a single comb:What’s the chance of a Silver Phoenix with this one?View attachment 3783740View attachment 3783741
I think you are probably correct.
If the comb was pea, it would probably be an Easter Egger.
Also, is this a separate breed than above ? I’m inclined to believe two separate females.
This one maybe a silver leghorn? (Or brown?)View attachment 3783745View attachment 3783747
I can't see the foot color, but Silver Leghorn seems likely (especially if the feet are yellow.) I think Silver Leghorn is more likely than Brown Leghorn, based on the back looking grayish rather than brown.
If the feet are dark colored like the other one, then they might be the same breed as each other.