Cant hate on kakashi on this one orders from the third were that any one that knew who his father was had to keep it a secret to protect Naruto.....so kakashi probably stayed away bc he knew it would come up in conversation and didnt want to let it out.It wasn't Jiraiya. Jiraiya knew of Naruto, but they didn't officially meet until he was a kid. It was Hiruzen, as everyone else was afraid of him. After that, Naruto lived on his own. It kinda annoys me though... Kakashi knew of Naruto and had respect for Minato, but he didn't even introduce himself to Naruto until he was on the team 7.
Hiruzen giving money to Naruto was in a filler. Manga never shows Hiruzen giving money to Naruto or visiting him (he showed Naruto's room to Kakashi but Naruto was in the academy waiting for him for their first meeting).Pretty sure it was hiruzen, we see him giving naruto money in like the first chapter implying he was being taken care of by the 3rd