[Dylanfm]

I think the exterior insulation is kind of taking the place of the cladding or rain screen here. I suspect it also as an air gap. But I suppose you could affix a rain screen to it, although I am not sure if that's worthwhile.

There's some more info here: https://www.designingbuildings.co.uk/wiki/Rainscreen

I hear the term "rain screen" fairly often to describe open cladding styles. Scroll down to "timber cladding profiles" and then "open cladding": https://www.thousandhuts.org/walls Rather than a more closed timber cladding, like shiplap or board-on-board, there would be a gap, maybe 8mm between the cladding boards. Rain can get in, but with an effective membrane beneath, it's waterproof. And there's always ventilation, so it dries out more quickly. If the wall is built for it, the membrane should be vapor permeable and allow the building to "breath".

I'm not sure if this is as appropriate for your local buildings if they have exterior polystyrene etc. Where I am in northern Scotland many of the buildings from the past several decades are timber frame inside + cavity + a wall of concrete blocks. Those concrete blocks are basically the cladding. They have the same renders as you linked on them. While a lot of people are skipping the blockwork and just cladding the building with timber or metal instead.