Interior, I agree semi-gloss or gloss is very common.

But semi-gloss or high gloss is an unusual choice for exterior applications with the exception of doors, i.e. shiny black doors are common.

Several reasons why no/lo gloss exterior but the most significant being the more sheen, the more every bump and imperfection shows and exterior substrates are chock full of both.

Flat is probably the most often specified gloss level for exteriors, it's very forgiving when it comes to showing expected bumps and lumps. However, I prefer matte. Second, would be satin if the brand's satin sheen is not too shiny. Matte or satin has just enough 'slip' to make it easy to hose off dirt but it's not so shiny that it looks weird. Flat is fine too but might not clean up as easily as a finish with a snidge of sheen to it.