As said elsewhere, we don't have time to maintain other lists. I'd add that many of the other places are a lot more..."ephemeral" than the foreigner focused ones. They'll support foreigners until they don't, either because the Japanese economy gets good again and they don't have to service foreigners, or because some asshat ruins it for everyone. There's definitely a tension between 'wanting more foreigner-friendly options' and 'causing a land rush of foreigners that overwhelm an agency to the point where they stop servicing foreigners'. To be honest, I'd prefer to pass along good intel to hobbyists that are willing to do research themselves (ie, read reviews and ask good questions) than provide a convenient checklist of places. Additionally, many of these delivery health and K-Girl agencies go out of business, change names, etc, which would add to the maintenance overhead of such a list.
Then there's the language barrier- I might be wrong, but I can't think of a single place that's not on the list that universally supports foreigners in English. Yes there's a lot of places where "one of the touts kind of speaks English", or they might not care if you don't speak Japanese, but those sorts of situations really aren't good for putting on a list of verified agencies, in my opinion.
I think the best thing to do is for us to keep filing reviews, and we can either tag appropriate reviews with 'English OK' or something else to make those agencies/providers more easily found. By having a standardized template to fill out for reviews, we've definitely started down the (long) path toward being able to find reviews by criteria.