Just a point of reference for the McClelland brands.
McClelland’s Highland - 5 year old Glen Garioch
McClelland’s Highland Sherry Finished 12 - 12 year old Glen Garioch
McClelland’s Highland 16 - 16 year old Glen Garioch
McClelland’s Islay - 5 year old Bowmore
McClelland’s Lowland - 5 year old Auchentoshan
McClelland’s Speyside - 5 year old Unknown distillery, although Suntory who owns the Morrison-Bowmore Group does own part of The Macallan and that is the most likely source.