Yes found a website, soccer base.com that seems to have the stats.
Hinshelwood 4 wins out of 17 games = 23.53% win ratio
Case 11 wins out of 53 games = 18.97% win ratio.
Wood 2 wins out of 13 games = 15.38% win ratio.
Was having a chat with a fellow fan after the match & we were pondering where Sami rates in Albion managers, win, ratios compared to the others; say to include only managers that have been at the helm for at least 10 matches. I go back to the late 1970s & am struggling to think of any worse...