I am not sure, I just posted this article in another thread
https://www.espncricinfo.com/story/how-can-rcb-turn-the-chinnaswamy-stadium-into-a-fortress-1370568
It says that RCB and DC have the worst home records, RCB only wins 50% of their home games and DC less than 50% of their home games
This other website has this table for the original 8 teams, it looks like you guessed MI's home win percentage almost exactly, it's 61.9%, a true superfan
https://www.indiafantasy.com/cricket/cricket-news/best-winning-percentage-at-home-in-ipl-what-is-csk-record-at-ma-chidambaram-stadium-chennai/
CSK, SRH, and RR win around 70% of their home games!
Team
Matches
Won
Lost
No Result/Tie
Win%
CSK
56
40
16
–
71.40
SRH
44
30
14
–
68.10
RR
47
32
15
–
68
MI
71
44
27
–
61.90
KKR
74
45
29
–
60.80
PBKS
57
31
26
–
54.30
RCB
77
37
36
4/0
50.60
DC
70
31
38
1/0
44.90