In the wild they are called a herd.
a fry or ponies
they are just called ponies. Even though most of them are actually horse sized, it's tradition to call them ponies.
HERD
A suitable title could be "Tales of the Exmoor Ponies" or "The Enchanting Exmoor Ponies: A Story of Resilience and Beauty".
tuft
herd
flock
bunch
Bunch
Those would be called the lead ponies.
I would call a group of balloons a "bunch"
ponies ponies ponies ponies x5 gigi pricsilla angel mr snoodle ponies ponies ponies poniesx3 tune from begginning