I personally love WebP and other innovative formats, I don’t wish them dead, because better compression saves time and bandwidth.
However, for saving stuff on my computer, like you, I would tend to go for more supported formats.
I’m mostly just sad that it takes so long for new formats to be widely supported.
Closest thing I know is Grist (https://www.getgrist.com/), because columns can contain lists of values or lists of references.
Probably not exactly what you’re looking for, but it served both my wife and I very well.