Which chemicals/detergents are suitable for cleaning my painted, outside faccade/stucco without damaging it?

I have a question about cleaning the painted outside facade/stucco of my house (I’m not asking for a specific product-recommendation).

Which commonly available detergents/chemicals are suitable for cleaning it (since it became a bit dirty over the last 20 years) and which detergents/compounds should be specifically avoided because they could be too abrasive/aggresive towards the lime in the plastering or the stucco-paint on top of it?

I’d also be interested in some physical methods from ppl who have elaborate experience with cleaning stucco/facades.

I tried finding some answers via the search-bar here but only found those two sort of unrelated questions (1 & 2).