Tailed Beasts are exceptionally hard to control. Very few shinobi, – Jinchuuriki or not – have managed to gain full Tailed Beast Control.
Here are all 8 Characters who tamed the Tailed Beasts perfectly.
Yagura was the Jinchuuriki of Isobu. He managed to gain full Tailed beast control over it’s power at a very young age. This also led him to be elected as the 4th Mizukage of Kirigakure. Yagura was, however, being manipulated by Obito Uchiha. It is unknown how he died, but he was followed up by Mei Terumī.