Looking at the underlying data it seems like ~75% of the growth from Jan-April 2022 to 2023 for BEVs comes from Tesla, BYD, VW, and GAC.
While ~41% of OEMs actually had lower year over year sales in the same time period for BEVs.
Global BEV Adoption is on steady increase. Q1 share is typically slightly below Q4, but in 2023 this trend was broken, this is an encouraging sign for the rest of 2023.