Is there data on the number of Snowflake proxies per country?
This page will give you some idea:
You may look here: https://snowstorm.earth/
The raw descriptors collected by CollecTor are here. Documentation of the format is here. For countries, the line you are looking for is snowflake-ips, which is a comma-separated list of country=n counts.
There’s a preprocessed CSV of daily proxy counts from each country at proxy-country.csv · main · David Fifield / snowflake-graphs · GitLab.