Simple model that does exactly as it says, produces extremely obese women, no need for tags. just put whatever you want and it should always give you extremely obese girls. This is my first attempt at making something like this for such large women so i recommend using addetailer with it for fixing faces, might make an improved version eventually with maybe different belly shapes or chin sizes, Not sure yet.
Literally i just use Score_9, source_anime, 1girl, solo, standing, for a few of these results.