In generally, I love yoked or raglan cardigans for children and babies -- easy to put on (no pulling over a huge noggin) and to fit (the vague armholes can accommodate a larger range of sizes).
This cardigan is sized for a 12-18 month baby. This one has raglan sleeves, a v-neck, and
seed stitch edgings and straight sleeves.
Pattern: my own
Yarn: worsted cotton/acrylic blend in periwinkle (a lovely shade)
Guage: 4.5 stitches/inch