I believe one is a pearl white leghorn and I'm not sure of the others. One is black and white speckled and one is red another is light brown and another is brown and white. Our first chickens...the "store" special. However they have been good egg layers so far
In addition to your White Leghorn, it sounds like you might have a Speckled Sussex, a Rhode Island Red or Production Red, a Red Sex Link, and the brown one could be any number of breeds. Of course, without a picture, I am just guessing. If you'd like them identified, post a picture and we can take a look at them. Also, you can post them on our What Breed or Gender is This? section at https://www.backyardchickens.com/f/15/what-breed-or-gender-is-this and let our experts there take a look at them as well. Good luck with your flock.