Ermm basically wood, fire, earth, metal and water.
Generally from what I read you can only be one type of mbti but then it is only important if u want to know more about urself.
ISTP / ISFP is V different.
Ti is logic. Meaning true or false.
You ask them 100 times the same question. They always has the same outcome.
Te is rational. Meaning majority wins. You ask them 100times. U will get different outcomes depending on the majority thinking.
Fi is moral while Fe is ethics.
Is banning chewing gum a good choice?
Fe users feel it is good for all due to cleanliness. Fi users feel bad morally because it deprived them the choice of enjoying chewing gum.
You can only be on one axis Ti-Fe or Fi-Te.