OK so with HWmonitor, there's TMPIN0, and TMPIN2. What do those mean?
Those are board sensors. Most times there is a Case sensor and a CPU socket temp.
Easy way to see what is the cpu socket temp is to just run HWmon then fire up prime95. The cpu temp rise fast and the other will not rise so fast.
Some boards also have a sensor near the chipset those temps raise as well, but not as fast.
In some cases you can even have a sensor that is not connected to anything show up(the chips used have multiple inputs and not all board makers use them all). Those will show strange temperatures like 88, 128, 256, ect all the time. Those can be ignored if you have them.