Could be balloons, but with strong prejudice. Was very strange. At first I thought it looked like black balloons, and they did kind of move like that in the way that they ascended through the sky together. But there was also something weird about it... All three of them moved independently backward, forward, and around each other.
It felt strange.
All balloons I've seen in the sky seem to have a direct path and don't wobble around like these did but who knows. Just thought it was strange and wanted to send to you for your expertise.