So for the Royal Canadian Regiment specifically that would be either the Duke of Kent (Royal Regiment of Fusiliers) or the Duchess of Cornwall (The Rifles). Both are already Colonel in Chief of a Canadian infantry regiment (The Lorne Scots and the Queens Own Rifles, respectively), but the Duchess definitely has a higher public profile in Canada.It may also have to do with who allied regiments in Britain receive, as there some times is a connection in this form.
Iām still standing by my earlier predictions of either Prince Edward or Prince William.