I suspect that these are Gi-Go versions of Simba’s Ballerina-Pony babies. Note that the trim around the legs is not painted. They are about 2.75″ tall. The hooves are stamped in jumbled order, reading left to right “MADE / CHINA / IN”. Read more about Ballerina-Ponies on Vetten’s site.
These ones may be older with painted leg bands and bows, perhaps Simba?
These ones have slightly pearlescent bodies and inset eyes: