I need to find the lowest level possible polygons for a few countries, including KSA, Jordan, UAE, Lebanon...
By lowest level polygons, I mean districts like this one and even if smaller
Where can I download or buy this data?
The disadvantage is that it only downloadable in OSM format.
Or to download the countries you want one by one from here, although some of the countries you mentioned are missing .
Also this website offers you the data for all countries , so you can choose your countries and download their shape files as it offers the ability to download with many formats.