I'm not sure you can break it out by brand so much as by specific hotel. I've been to dif hotels of the same brand & their fitness rooms are different, usually based on age of hotel, location, type of hotel, etc.
BTW - LOL - when I read the title, I thought you meant like what was in the washroom or showers if they had them in the fitness rooms, such as Bvlgari, Crabtree&Evelyn
Cheers.