Iran(and the rest of the middle east) produces mostly light oil, which America already produces in over-abundance. We only need heavy oil, which we get mostly from Canada. Europe has an energy dependence on the middle east and formerly Russia because they mismanage their own resources. But we rely on Europe to operate well so it’s still our problem because we’re the only ones willing to take responsibility for global stability.
Freeing Iranian oil is more about taking it from China(they get it very cheap because of sanctions) than it is about taking it for ourselves or anyone else though.
Gulf produces mostly medium sour. Asian refiners are mostly configured for medium sour grade that comes from Gulf/Russia. The greater point though is oil prices are set largely based on international markets supply and demand. If a bunch of supply get shut in/destroyed it will for sure impact everyone including the US consumer. In the US we likely wont have shortages like in SE Asia but the price will surely go up (it already has and that's with SPR release and Bessant shorting futures). If this doesn't get resolved by month end, parts of the globe will have shortages, and i'd bet we get 5/gallon before we see under 3 again.