In any% if I found 1 evidence and then i see dots for example so if 2 ghosts let say goryo and phantom are possible (dont know if the combination is actually possible) can i end the run and check phantom without finding the 3rd evidence? What i mean to say is can i use ghost behavior to disapprove a ghost? like if i see dots, can not be goryo, if ghost step on the salt can not be wraith and so on?

If you are running any% then yes you are allowed to rule out ghosts if a behavior is performed that absolutely cannot be that ghost. Just like in your examples with stepping in salt, seeing dots in person, or another example being the breaker getting turned off.