Unless a pattern is more suited to a batiste or light broadcloth, quilting cottons are fine for children's clothing. Suggested fabric types are usually listed on patterns. I have had mixed results wandering from that.
I find it more difficult to find patterns for adults, which is a shame because quilting cottons are such a joy to sew. I have had the best luck with patterns which need a "crisp" fabric like a tailored shirt or pajama pants. Louise Cutting of Cutting Line Designs has a one seam pant pattern and a pattern with a side pocket panel that I use all the time for pajama pants made from discounted quilting fabrics. I found a ball and jack print quilting fabric in grays and yellow a couple of years ago that I really wanted to use to make a dress. It took a lot of looking, but I found a shirt dress pattern.