There isn't many deep dive analyses of high level games, it takes a lot of effort for people to do it for no real reward. Some things come close though, but likely not the depth you are looking for.

I did a review of almost every game in an ETF2L prem season about 2 years ago. I tried to explain some things but quality of stream isn't that good but I'd like to think the analysis is relatively interesting to think about.
An example is this but most are highlighted on the same channel https://www.twitch.tv/videos/1097696082

Another player who doesn't review but does a casual cast alongside with their opinions of the game that I find pretty good is botmode.
An example of his sorts of reviews would be https://www.twitch.tv/videos/1442473330 with a few other examples on the same channel. Once again not too in depth but rather gives the view of the game from a high level player who understands what's going on from the casted pov. A lot more casual, more fun to watch over deep analysis but it's still got a lot of respectable views to listen to.

I know he casted RCADIA lan games from last october like this but i'm not sure if those vods are saved anywhere.

In terms of deep analysis noone really does that so much at the moment. I'm not sure if anyone really does demo reviews on stream but it can be worth a shot to just check out when players stream and ask for their opinions on some things, most would be happy to explain.

https://www.youtube.com/watch?v=vpyUJJGmf3M

Some examples:
aim: in depth analysis

botmode:
localhost 1 vod
localhost 2 demos

marmaloo:
froyo vs g6

kaidus:
fullerton lan 1 pt 1
fullerton lan 1 pt 2

check those vod dump channels for other players/more vids