It woulda been Jiraiya since he's Naruto's god father. Iruka would just be another thirsty ahh ninja.

Nope it should always be Iruka. Brings it full circle.
First person to take notice of Naruto and fulfilled the big brother/dad figure role perfectly when it mattered as Naruto was quite a bit older when he forced Jiraiya to be his master. Loved Iruka's few moments in Shippuden.
tbh if thats the case he done a shit jobActually Jiraiya pretended to not want to train Naruto when the reality he knew Naruto and look after him from a distance since the death of Minato. However the way Naruto feels about Iruka is way more I think, even though Jiraiya is his God father.
If Jiraiya wasn't dead he would of claimed that father spot at Narutos wedding.
Or am I underestimating Narutos love for Iruka?