Why can’t you hand wash them?

They’re all washable by hand with a bottle brush

I must not be understanding the question. I can’t think of a water bottle that you can’t hand wash? Do you mean water bottles that are dishwasher only? Do they exist? Do you mean water bottles where you can fit your whole hand inside to wash? Because that sounds like a very large water bottle?

Wide-mouth Nalgene? I use a silicone stray in mine so I don’t spill.

Recommending a bottle brush, but if you want to get your whole hand in there...

I have a Yeti Rambler 26 oz. in black that has a very wide mouth. I personally can't get my hand in it, but I have very large hands. You might be able to. The mouth is roughly 2 and three-quarters inches.

https://www.yeti.com/shop-by-color/nordic-purple/21071501130.html

Is anything not hand washable?

I use a wide mouth Nalgene as well. I recently washed it in the shower with me (along with my underwear but that’s off topic).

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I have a 32oz $3 Nalgene that I’ve had since 2001, it’s on its 3rd lid tho.

Literally anything can be hand washed except a polar bear. Are you currently using a polar bear as a water bottle?

I'm willing to wash a polar bear. Let me at it