Always been partial to
Goodnites Underwear myself, so those might be worth a go (especially with the new larger sizes coming out soon). The generic/store brand versions of Goodnites (
Target Up&Up Nighttime Underwear,
Kroger Comforts Nite Pants) are usually always a good alternative, as well. Though, if you're able to get ahold of the
Korean version of Goodnites with the refastenable sides, those would probably be the best of the options.
Other than that, I think the official
Huggies Pull-Ups - with side extenders (unless you're really lucky and able to fit into them without) - would certainly be a fun option! Generics/store brand versions would be good bets there too.
As a last possible additional option, if you're like me and always looking for Earth-friendly alternatives to stuff, I would
highly recommend trying out either
Huggies' Pull-Ups New Leaf or
Bambo Nature's Dreamy Night Pants. I’ve personally found them both to be pretty awesome alternatives to the normal options. And like most things, they're not perfect; however, I would definitely say that they're at least worth a try!
Hope this helps and best of luck in your pull-up journey!