Depending on how you feel about crossovers, I know of a daddy!Tony you might like over on ff.net. It's a cross with Harry Potter where Harry is deaged and adopted by Tony. Here's the link:
Man of Iron, Father of Gold (http://www.fanfiction.net/s/8186086/1/)
Also, for your first request I have a sorta match. It's Mutant!Tony, and Tony being the only one with extra powers. It's a series of 3 stories with another on the way, located at AO3:
It's All in the Mind (http://archiveofourown.org/series/21783)
Sorry the last one isn't an exact match, but I really enjoyed reading them so I thought I'd rec them anyway, hope you don't mind.
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Man of Iron, Father of Gold (http://www.fanfiction.net/s/8186086/1/)
Also, for your first request I have a sorta match. It's Mutant!Tony, and Tony being the only one with extra powers. It's a series of 3 stories with another on the way, located at AO3:
It's All in the Mind (http://archiveofourown.org/series/21783)
Sorry the last one isn't an exact match, but I really enjoyed reading them so I thought I'd rec them anyway, hope you don't mind.