User:Crouch, Swale/DIFFCAPS

Common people redirects to Commoner, Common People is about the song, notice that PC78 opposed moving the upper case in 2009 but supported it in 2019 probably due to clarify in the guideline.
Duck sauce is about the condiment, Duck Sauce is about the band.
Eternal flame is about the flame, Eternal Flame redirects to Eternal flame (disambiguation).
Excess baggage and Excess Baggage both have no PT.
Grateful Dead and Grateful dead go to the band, the lower case should probably have no PT.
Iona is about the Scottish island, Iona Island is a DAB.
Iron Maiden is about the band, Iron maiden is about the torture device, this is probably the best example of DIFFCAPS but not universally accepted.
Islay is about the Scottish island, Islay Island also redirects there but there is also Islay Island (Antarctica).
Red meat is about the meat, Red Meat has no PT and redirects to Red meat (disambiguation), there are others that use the upper case.
Shuna is a DAB since Shuna (Slate Islands) is just "Shuna" on OS but Shuna Island redirects to Shuna, Loch Linnhe.
Sea urchin is about the animal, Sea Urchin also redirects to it with a hatnote to Sea Urchin (disambiguation), Sea urchins redirects to the animal but Sea Urchins is about the TV series.
Stressed Out is about the Twenty One Pilots song, Stressed out has no PT.
The Police is about the band), The police has no PT.
Ulva is about the island in Scotland, Ulva Island has no PT and redirects to Ulva (disambiguation).