i dont know which team but i will give you an idea about them, i wanna say gambit but they use vandal a lot which is bad for spraying
Astralis didn't do set plays any more than any other team, it was more fluid utility co-ordination, they would try to get the best value out of their grenades and use really smart smoke + sprays to "soften the enemy up". There's been analysis about Astralis aiming for the body a lot more than the head compared to other teams, this was because the enemy was often low from the way Astralis damaged them early round and made for easy 2-3k spray-downs when the enemy tried entering site.
That's about all I know, I didn't watch them in their prime I just read some stuff on them.
here is analysis about astralis, there was more but this is one that i found that i remember reading https://www.reddit.com/r/GlobalOffensive/comments/d3a19z/astralis_is_often_not_aiming_at_head_height_and/