I join everyone else in thanking you for taking care of these two cats that someone else, heartlessly, threw away. I am sure you will be rewarded one day with Emmy allowing you to really cuddle her. Perhaps when you are sitting outside more often during the warmer months.

Brownie looks like an unaltered male to me - I see the larger, heavier head size and battle scars that look just the same as the unaltered tom I took in just over a year ago. I hate to push you to do more, but a trip to the vet would be very useful. If Brownie is an altered tom, he will continue to get battle wounds with the risk of some getting abcessed.

Welcome to the cat side of town!