There are tons of industrial locomotives that meet this category. (Lots of people were delighted by Hornby's Sentinel diesel announcement too!)
There are many 0-4-0ST and 0-6-0ST steam locomotives (and diesels too!) that never appear in the polls (for very good reasons articulated by the wishlist poll team) but would delight many enhusiasts in the same way as the examples you highlight.
The list of interesting Avonside, Peckett, Kitson, Andrew Barclay, Hawthorne-Leslie, Hudswell-Clarke, Hunslett, Manning-Wardle, Sentinel, Rushton, etc locomotives that people would enjoy to see as models is huge.
A handful of these that were incorporated into railway companies, do show up in the polls of course. The Wickham trolley and the Garratt certainly did.
The most recent discussion on standard gauge industrial locomotives is here.