How do I right-click in iOS Safari to access website specific functionality?
Since the original iPhone, mobile safari and iOS in general has multitouch and there is no concept of a single pointer. There can be up to 11 different point interactions that change in time, so the core problem is that web sites not designed for touch fail to deliver a good experience.


There is no hover if you don’t have one pointer - so all the hover to show details falls flat
There is no control / right shift / option / mofifier click to map to a pointer that doesn’t exist - so your use case simply fails to exist.


Some things do translate well:


Mouse down event can be processed when multitouch shows a tap (finger down and no large movement)
Mouse up event can be processed when multitouch shows a finger up (no more contact in the region of the initial touch or tracked moving touch)
Multiple finger touch can sometimes map as option click.


Sorry to say there simply isn’t a mouse or pointer on iOS, but that’s kind of the summary.