It's a hard one to say... We don't really know the bond that he had with Nagato & Konan. He merely took care of them as he felt it was the right things to do so. No doubt he had felling's from them, although to what depth....
Minato was his biggest achievement. He's went on about how much he loved Minato for his kind nature and his incredible abilities as a Ninja.
Naruto is more like Jiraiya than Minato, as they have the same care free personally and clumsiness. It's been stated that Jiraiya seem himself in naruto which is why he took such a likely to him. I believe that over the year's he bonded with Naruto more than anyone else before, due to his personality and never give up attitude. Unlike Minato, naruto wasn't born a genius or had nature talent. Naruto has to work on his abilities like no one else...
Naruto i believe was more dependent on Jiraiya, thus having a deeper bond with him. Minato was able to fend for himself at a young age.
It's incredibly hard to say, due to us not having enough knowledge on his relationship with his other students...