Probably this https://www.amazon.com/Zojirushi-NP-HCC10XH-Induction-Heating-Stainless/dp/B00VAG84O2

I don’t have the time to Google atm but there’s a growing body of experts shifting to the “it doesn’t actually matter”. Here’s a podcast about it but there are definitely more sources to find: https://www.abc.net.au/listen/programs/lifematters/the-myth-of-good-posture/13864470

I saw another comment in the thread about ensuring you get movement in – that’s what my PT hammered into me.