https://www.japan-mobility-show.com/en/gallery/ has the photos the automaker submitted. I just finished my first day and only breezed thru the area w/the major automakers due to the crowds. Will be back my tomorrow. There was for sure a lot more emphasis on EVs this time than 2019. Tesla wasn't there this time, AFAIK.
I haven't watched https://www.youtube.com/watch?v=PUu2fb3PISU yet and it's in Japanese. You can try to have YouTube auto-translate.
BYD had quite a presence and a lot of interest. I glanced at the interiors of some of the cars they brought and some are very unusual from the controls POV.
I found https://www.youtube.com/watch?v=d_AG1TZBCN0 and for sure haven't watched it but the crowd at the beginning is similar to what it looked like when I arrived right before 11 am even though the show doors opened at 10 am for everyone or 9 am if you paid 500 yen more for an early access ticket. Was crazy.
Not sure when that guy went. If he went on a press day (https://www.japan-mobility-show.com/en/outline/), maybe that's why rest of show for him didn't look so crowded.
I again did see Mercedes BEVs with J1772 and CHAdeMO inlets on them. BMW had some BEVs and was crowded, so I didn't have a chance to look carefully at anything there.
Update: Finished watching this 5.5 minute video published by NHK WORLD-JAPAN: https://www.youtube.com/watch?v=_kw1Ef4VgA4. Since she's press, I suspect she went on press day. I wish the crowds were that light most of the day. They weren't.
Update 2: Click thru each of the halls at https://www.japan-mobility-show.com/en/showguide/ to get an idea of who's exhibiting at the show. I'm partway thru watching this 12.5 minute video: https://www.youtube.com/watch?v=E9ECXY5czWI.
I did see the JDM Subaru Solterra at the show and it had CHAdeMO inlet on one side and J1772 (no CCS) on the other, kinda like JDM Ariya.