I'm also in the NW suburbs of Chicago and unfortunately I have to give you some bad news - you are not going to be able to find a shelter, other than a high kill city pound, to take your cats. PAWS doesn't have any space and if they do they take in cats that are about to be euthanized or are in some other bad or dangerous situation. Most area shelters are the same way. Owner surrenders are far down on the priority list. It's kitten season right now which makes it even worse. Shelters all over the place are overflowing with kittens. I just got an email the other day from a downstate rescue looking for placement for 12 kittens and a few adults who are scheduled to be put down this week. Most likely most of them have already been put down.
In a situation as desperate as this your cats unfortunately don't have a good chance to get in anywhere. The fact that they are 7-years old and gray tabbies doesn't help either as they are not considered to be very adoptable since most people want young, exotic looking cats. There are of course shelters that will accept any cat but because they get so many coming in they have to euthanize a lot of them to make space. Some, like The Anti-Cruelty Society, will accept any pet but then put them in a van and take them over the the city shelter where the majority are put down.
I don't mean to sound negative but I've been in the cat rescue business for a while now and the sad truth is that it's extremely hard to find a good shelter or a good new home for an adult domestic shorthair. There are about six thousand cats in the Chicago area available for adoption so the competition is fierce.
It doesn't hurt to try to get them into a good no-kill shelter and advertise them to try to find them a new home but please prepare for the possibility that there may not be any good options. I have foster cats that I've tried to find homes for for two years with nobody interested in them. If I were you I would try to find a way to keep them. If you don't believe they are safe around your baby you can separate them and have the cats live in a separate room where they would have no contact with her. Cats can do just fine living in just one room. A bedroom would work well. It may not be ideal but it's a whole lot better than a little cage in a shelter for months and months or being separated in new homes where they may not be well cared for or worse. If there is a will to keep them there is a way and I'm sure you love your cats and want the best for them and of course the best for them is to get to stay together in their own home. Anything else would be very, very traumatic for them and I'm sure you don't want that. What do you think? Is there a way to keep them?