I just checked to see if any new and interesting videos came available and came across this one by Andy Astbury:
Raw Therapee Noise Reduction - New Tools Basics It is a rather short one, at 22 minutes, if looking at his other videos.
This one shows a nice way to selectively target noise using the Local Adjustment tools. Specifically the Full Image option in combination with the Blur/Grain & Denoise tool.
@Andy_Astbury1: Thanks for putting up another nice one!