Emulsive.org is a massive resource for all things film, but it can be hard to find the really useful things. One of those is the list of every single film stock still made today, complete A-Z. While the beginning has a rant on the usual negativity from the Internet, the listing is up-to-date as of writing and is an impressive compendium of work.
Not only is every manufacturer listed with every film that they make, but there is a breakdown of which format each film is produced for, and a total count of each emulsion made for each format by type of stock.
For example, the total number of films available for 110 format is 4, while 120 has 82 brands of film to choose from, 35mm has 158 and so on.
Well done.