Which countries have the largest number of already proposed TWHS?
Very few countries have more than 4 such sites (8 countries):
Czechia is the leading country with 8 proposed TWHS. Following are China, India, Russia and Spain with 6 each. 5 TWHS have been proposed by Pakistan, Slovakia and Uzbekistan.
4 have been proposed by further 9 countries: Austria, Ethiopia, France, Israel, Italy, Portugal, Romania, Turkey and UK.
An interesting observation is that some of these countries are not the "usual suspects". Czechia and Slovakia have been extremely active, although with limited success compared with the intensity of putting forward proposals. Pakistan and Uzbekistan, on the other hand, have mostly had failures in this respect.