Vine Lace baby Cardigan, free pattern by j'adore knitting. Top down and one piece!
No translation from Russian , but I'm sure I can replicate it from the wonderful photos .
Ravelry: Entrechat pattern by Lisa Chemery
Ravelry: The Little Tourist Poncho pattern by Jenni Lansing. 3 months to 10 years - ravelry says to do in cotton so would work for warmer climates
Louise Knits: Free Knitting Pattern - top down cardi plus link to similar pattern in adult size.