Guys, you're very welcome!
Indeed, all are 9D US equivalent* except for the Barrie which is, of course, an 8.5D.
*8 UK standard width as per Carmina
They all fit adequately. Forest and Oscar are quite standard in fit. The Rain feels slightly loose in the heel but both Rain pairs that I own (for now, as I have a boot on the way soon) are monks so take that with a grain of salt. The Soller on me is wide, and thus long feeling; it also feels voluminous in the instep. I...