Based on the phrasing, it sounds like you might be looking for communities or platforms related to either automotive repair or personal fitness/physique for the transgender community. Because "tranny" is a slang term used in both automotive circles (shorthand for ) and as a slur/self-identifier in the transgender community, here is where you can find "rate my" content for both: Automotive (Transmission Valve Bodies)
If you are looking for "rate my" content regarding within the transgender community, there are several social media trends and subreddits dedicated to sharing progress. rate my tranny body
: A common place where users post photos of their transmission pans and valve bodies for "rating" by professional and hobbyist mechanics. Based on the phrasing, it sounds like you
: Users frequently use this hashtag to share fitness journeys and receive feedback on their physique. : Users frequently use this hashtag to share