Automotive batteries and grid storage are probably going to be separate. Car batteries (or e-bikes, for that matter) need high capacity in the lowest weight. Grid storage cares a lot less about weight; they want the lowest cost per MWh.

Flow batteries, in particular, are something to keep an eye on.

I'm interested in batteries/energy storage science and want to know who's the big players in R&D big picture stuff, so yeah cars included but that's not like my specific interest.