In personal experience, it's mostly been just the well fed (more so overfed) girls for me, due to the US customs and culture are shared mostly in Costa Rica, the brands and such, it's not surprising that a lot of the women here are naturally fatty, include population sizes and that most women work on the more sedentary type of jobs or are general housewives, of course the female population is much fatter in average. Include that a lot of Costa Rican culture is centered on public spaces with lots of eating stablishments due to tourism, it's not surprising that on an average day when a unemployed or just not currently working woman strolls around the streets and ends up going from place to place, day to day, eating herself until she's a waddling mess, so in other words my country has a lot of fatty women, it's a chubby chaser's paradise.
It's not surprising to encounter girls wearing form fitting outfits that reveal pudgy stomachs or massive girls that take up most of the space in their seat or requiering an extra one, hell in most recent memory today i saw one wearing a cyan dress that showed a pair of fucking potato sack thighs just wobbling as she was walking her dog or 2 more mature ones with rear shelves at KFC as their order is being taken by a waddling lady who's at least 400lbs (again reminder, lots of american branding over here, culture is different but shops are mostly the same). Of course not every woman is like this, there are certainly a fair share of skinnier women but even still it's much closer to 50/50 odds when looking for fatties