These are the current NMT categories:

#define MEMORY_TYPES_DO(f) \
  /* Memory type by sub systems. It occupies lower byte. */ \
  f(mtJavaHeap, "Java Heap") /* Java heap */ \
  f(mtClass, "Class") /* Java classes */ \
  f(mtThread, "Thread") /* thread objects */ \
  f(mtThreadStack, "Thread Stack") \
  f(mtCode, "Code") /* generated code */ \
  f(mtGC, "GC") \
  f(mtGCCardSet, "GCCardSet") /* G1 card set remembered set */ \
  f(mtCompiler, "Compiler") \
  f(mtJVMCI, "JVMCI") \
  f(mtInternal, "Internal") /* memory used by VM, but does not belong to */ \
                                     /* any of above categories, and not used by */ \
                                     /* NMT */ \
  f(mtOther, "Other") /* memory not used by VM */ \
  f(mtSymbol, "Symbol") \
  f(mtNMT, "Native Memory Tracking") /* memory used by NMT */ \
  f(mtClassShared, "Shared class space") /* class data sharing */ \
  f(mtChunk, "Arena Chunk") /* chunk that holds content of arenas */ \
  f(mtTest, "Test") /* Test type for verifying NMT */ \
  f(mtTracing, "Tracing") \
  f(mtLogging, "Logging") \
  f(mtStatistics, "Statistics") \
  f(mtArguments, "Arguments") \
  f(mtModule, "Module") \
  f(mtSafepoint, "Safepoint") \
  f(mtSynchronizer, "Synchronization") \
  f(mtServiceability, "Serviceability") \
  f(mtMetaspace, "Metaspace") \
  f(mtStringDedup, "String Deduplication") \
  f(mtObjectMonitor, "Object Monitors") \
  f(mtNone, "Unknown") \

The memory used by JFR might already be tracked via "Internal" or "Tracing" category, but if it is not yet, should we add it?