Well it does depend on the champ, Lee and Shy still prefer Wriggles.
Sejuani though is absolutely fantastic with a Spirit of the Ancient Golem. I suspect Jarvan and Kha would benefit from spirit of the lizard elder. I suspect Amumu and Nautilus will need spirit items too.
I've only gotten into Sejuani and Shyvana jungle so far; love the changes cause it promotes passive farming until lvl 5-7 and less chance the enemy will invade. But yeah, Spirit is essential on Sej and probs many others.