I usually don't make fat sims to populate my sim worlds. But going through my gallery library I do seem to have some for variety's sake. This is Janice Johnston, the first fat sim I made in Sims 4. Since I delete most premade sims that come with the game, I need to create my own to fill up the various worlds. She's mostly the result of playing around with the larger body shapes in cas to see how big I could make a sim. I don't remember if this was in the free Create-A-Sim Demo or shortly after I got the base game way back. I did like the result and envisioned her as being that nice neighbor, or someone's slightly eccentric aunt. She was meant to be good with children and I also imagined her to be a teacher. She's been available on the gallery since February 2015 and oddly has 24 favorites, but only 1 download.
https://i.imgur.com/eHGIoqb.png
This is Chef, a sim I made in preparation for the Sims 4: Dine Out release. He was based on a certain fat cartoon character since I anticipated I was in need of a chef for my restaurants. He still gets occasional downloads from the gallery.
https://i.imgur.com/DPZfSjl.png