For the collation of Golden Age as well as Las Vegas and Los Angeles both being US cities with English names I agree with you Indeed a general category for riverine islands would be much better than Category Islands by river Sorting the article in Islands by river under G is logical but has the disadvantage of using an element that isn t displayed in the category listing As La Cartuja is also in other categories i e Category Isthmuses we should still find a default sortkey that is consistent Similar to The Hague under H or La Chaux de Fonds under C as on and anywhere else I could find it I d go for C User Docu