Is the Jougan stronger than the rinnegan?

Rinnegan is the strongest Dojutsu and the Jogan is not even as strong as 1 tomoe sharingan. All the Jougan does right now is see changes in chakra and give inhanced strength,as to the Rinnegan who could summon the outer path store bijuu in it and bring people back to life.

Does Naruto know Boruto has the Jougan?

Naruto knows about Boruto’s eye as well as Sasuke. In the anime, Boruto told his father about the eye under the impression it may be an awakened Byakugan. The Jougan’s abilities are a mix of all 3 Dōjutsu eyes.