Have you tried this site? If gives directions for yarns in multiple guages. If you need it rapidly you should probably use a good sized yarn. They also have a list of motifs to put on the front of the sweaters or just use a textured stitch.
I am currently using Designs by Judith Kid's Knits. It is a great versatile leaflet that should be easy to find. It offers a cardi and a pullover with options for sizes 2-16 and a variety of band and neck options. I made the size 8 in a chunky wool for my granddaughter and am making a size 2 for my 9 month old grandaughter in a bulky cotton - Fandango. It offers options for all gauges form DK to Super bulky. They are cute and offer me a place to use my funky vintage button collection. Also has a matching hat.