"CPU cooler" section in "my system" profile section

As it says in title. Most of us (probably) have upgraded over the stock cooler, and it would be nice to add that info to the "my system" part of our profiles.

I don't think this needs to be extended to GPU coolers, as user-applied aftermarket coolers for GPUs are getting very rare so specifying the GPU brand or model in the relevant entry is sufficient

Debatable.
Almost everyone I know, who is enough of an enthusiast to know which cooler they have fitted, will also have a GPU cooler - usually an EKWB custom water block, but still...
Then you have RAM coolers, full motherboard AIO water coolers, etc etc...