For cows, water, grass head, bean, gold, jade, treasure head, human, wood, are used as radicals, Zhenyu, Jilan, Gantao.
Children are in the first month. You can use Jiaguan, Taihong, Meng Chun,
Jiangbo, Bibo, Haohan, Haoyue, Junling, Yunlong, Zhenhua, Zhaofeng, Jianyu, these are all good ones. I came up with it myself