Westcombe Park - Blackheath Royal Standard, having lived in the area for years, nobody calls the area around this station Westcombe Park, it’s known locally as Blackheath Royal Standard, so maybe call it Blackheath North for a simpler name.
Stratford International - Stratford Highspeed, international trains have never, nor ever likely to ever call at Stratford, it’s served only by Southeastern Highspeed trains so Stratford Highspeed makes more sense.
Denmark Hill - Camberwell, Denmark Hill is a sub district for the larger area, a compromise could be Denmark Hill for Camberwell or Camberwell & Denmark Hill
North Dulwich - Dulwich Village, quite frankly I find all the stations in Dulwich geographically challenged, North Dulwich is west of the Village area which itself is really west of West Dulwich station, which in turn is technically South Dulwich and East Dulwich is more north than North Dulwich.
Catford & Catford Bridge - Catford Town, I do recall a plan to have one complex for these two stations to merge into years and years ago but it never happened obviously but had it happened, Catford Town would be my name for it.