Leakproof insulated travel mug recommendations

I'm looking for a new travel mug but can't find one which meets all my requirements:

• Reasonably leakproof. I'm clumsy, I knock stuff over. I like to have reasonable certainty that liquid won't exit the cup unless I want it to. I feel pretty ambivalent about press-in lids for this reason, I'd much prefer a lid that screws in. Doesn't need to be completely watertight though, e.g. I don't necessarily need something I can put in a backpack.
• No handle. Needs to be able to fit in my car's cupholder.
• Reasonably high capacity. E.g. around 400ml.
• Easy to open. Lots of mugs (e.g. the frequently lauded Zojirushi line) have a lid which looks like something from a spaceship. I want something I can open and close with one hand while I'm driving.
• Simple utilitarian design. I'm not a fancy guy.
• Cleanable. Weirdly this often seems to be treated like a bonus in the thermos market.

Previously I used an unbranded mug from Amazon. This actually worked pretty well, but the seal on the lid has started failing after about 6 months, so I'm now after something longer lasting. Happy to pay a premium for this if it means I can pass it on to my grandchildren one day.

The closest thing I've found is the 20oz Yeti Tumbler, but I don't trust the look of the press-in lid or their magsafe mechanism. The version with a handle has a screw-on lid which looks perfect, but the handle is a dealbreaker for me ☹️

Recommendations very much appreciated!