Welcome to APUG.
It is probably best to start your own thread - I know we won't mind .
If you start with a title like "First MF Camera suggestions - with hotshoe" it will help.
I'd suggest a Mamiya 645E like this one:
(Barry can thank me later ). EDIT - I now see that it has been sold!
Alternatively, lots of MF cameras work well with handgrips. I have two (Mamiya 645 Super and Mamiya 645 Pro) where the handgrip has a hot shoe. I have three others (Mamiya C330, Mamiya C220 and Mamiya RB67) where the handgrip has a cold shoe and I can use a simple pc cord to hot shoe adapter on it.