Migration Assistant hasn't worked
I've used Migration Assistant to move everything from my old 2012 Imac to my new one. But it hasn't moved across all my Office for Mac programmes, email accounts, dropbox app and Google chrome (my default browser, and bookmarks. Also it seems to have gobbled up a huge amount (201gb) of my SSD storage, showing under the storage tab as "other". Any ideas?
iMac 21.5″, macOS 10.13