Keens are not water shoes. They go in water but they take a long time to dry.

All my kids keep a pair of crocs around for house shoes and or water activities. I liked these since they fit narrower feet a bit better than the clunkier classic crocs clog model. Yes. They are still wider than normal shoes, but are a better option than the clogs version. They are not as easy as the slip-on clog, so I would not recommend you buy these if that's an appeal to you. Where my 2 year old can easily put on her clog type, these actually require her to use two hands and sit before she dons them. She was however, able to learn to do so within 2-3 wears. If you don't want the hassle (if any) then maybe stick to something that's easier to slip on. you can also find more wide shoes for toddlers here https://fitfootpro.com/best-shoes-for-wide-feet-toddler/

Imse Vimse water shoes (like slippers), you can get them from diapers or amazon.

Carter's. This is the first time I found water shoes wide enough for DC's feet.