There are 2 repositories under reflective-dll topic.
Windows Event Log Killer
C++ WinRM API via Reflective DLL
Position-idependent Windows DLL loader based on ReflectiveDLL project.
Run python from a single exe
a stage1 DLL loader with sleep obfuscation
A C based reflective DLL injector which will inject a DLL packed into the very same executable.
VeraCrypt Stealer