Without appearing biased or controversial in claiming this, based upon personal experience/ observations, this is what I've usually observed:
NFs:
INFP- would probably alternate between being a devout follower toward whichever faith they belong to (based upon how well it correlates with their personal value system), or being somewhat outspoken about their atheism or disbelief in traditional religion, often rationalizing their views by recalling certain inner beliefs they've reflected upon that they feel contradict the common teachings of said religion.
INFJ- might be more inclined to believing in God simply as a means to conforming with societal values, without following a traditional religious structure. More specifically, I often feel that most INFJs may tend to be either spiritual believers in God (having faith in Him without considering themselves a follower of any particular faith and basing their beliefs upon their own visions and ideals) or agnostic, feeling that something divine may lie above us all, but is impossible or much too complex to describe.
ENFP- probably more inclined to being spiritual/ agnostic than truly religious, as their Ne was lead to their seeming skeptical of traditional beliefs and continuously question the "what ifs" and possibilities that lie beyond what the bible (or whichever religious book) has taught them.
ENFJ- based upon personal experience, I've observed that many of them tend to be surprisingly religious/ spiritual with an open desire to inspire society to instill their religious ideas onto eithers and "enlighten" them by persuading them to accept their faith (yes, I know that this sounds terrible, and didn't intend to insult ENFJs in claiming this, either...). I feel as though most of them fulfill the role of the classic spiritual leader/ mentor attempting to offer healing and acceptance toward those around them and lead them towards positivity through a shared faith.
NTs:
INTP- As the INFP, probably alternates between being rather vocal about their atheism or being spiritual/ agnostic, considering differing religious viewpoints, yet remaining skeptical to them all while trying to discern the ultimate "truth" beyond it all through extensive deductive reasoning and analysis. Probably somewhat quirkier and more alternative in their reasoning than would be the INTJ.
INTJ- Probably rather similar to the INTP in terms of their perspective on religion, but with a certain logical/ scientific edge about them, being somewhat more subjective in their logical reasoning as they approach religion as something that can be analyzed through scientific analysis (think the typical intellectuals discussing the prospects of religion on a documentary contrasting atheism against Christianity.)
ENTP- Probably possesses some sort of alternative perspective upon religion as they reject all potential beliefs and try to craft their own personal spiritual system to follow based upon their own logical reasoning, regardless of how eccentric it may seem to outsiders.
ENTJ- Probably very similar to the ENFJ previously described, but with a greater desire to organize their environment logically based upon their vision than group people harmoniously according to ethics and a common religious belief.
SJ:
ESFJ- The dutiful religious follower who continuously tries to exemplify the traits of the ideal Christian (or member of their personal religion) by being overly polite to all newcomers and striving to organize church activities and meetings that will strengthen the sense of "togetherness and belonging" experienced by the community.
ISFJ- A quiet, dutiful follower to their religious faith who readily adheres to the ideals imposed by the church and tries to comply to them by adapting their values onto their daily structure of life. Likely a kindhearted, hard-working contributor to the church who serves as the ESFJs calmer, less expressive partner in spreading the word. If a teenager, I'd also imagine them to be the type to engage in several community service organizations/ extracurricular revolving around their religious beliefs and being an avid volunteer for the church's activities.
ESTJ- The strict, traditionalist parent/ leader striving to organize their environment according to their religious beliefs at whichever cost, probably adhering to the views proposed by their faith a bit more strongly than most and seeming hesitant to accept any new ideas that may somehow contradict the bible's teaching, hence their appearing somewhat close-minded and inflexible in regards to more controversial matters (gays/ transsexuals, abortion, premarital sex, teenage pregnancy, atheism/ agnosticism, marrying outside their faith, etc.)
ISTJ- Likely bears many similarities to the ESTJ church member described above, but is quieter and less imposing in stressing their religious beliefs. Probably desires to adhere to a traditional schedule for attending church every Sunday and honoring every religious holiday/ event in their calendar with reverence. As the ESTJ, I feel they might also struggle in accepting unorthodox values/ controversial matters that deviate from the norm.
SP
ISFP- May appear similar to the INFP to an extent, yet seems more likely to be "spiritual", without a strong adherence to any particular faith/ religion, as they observe their society from afar and craft their own inner value system based upon what feels "right".
ISTP- Probably the most likely of all the MBTI types to be a flat-out atheist (although I may be biased in assuming this), as they appear to be very logical and present-oriented, possibly causing them to defer any form of religious belief/ practice simply because it just doesn't seem feasible/ logical to them.
ESFP- Similar to the ISFP in their tendency to be "spiritual" in their beliefs, although I feel that they for some reason seem more likely to be a believer in faith/ religion (possibly as the bubbly, enthusiastic churchgoer striving to be kind and polite towards everyone and accept them equally).
ESTP- Like the ISTP, is possibly too pragmatic/ present-oriented to give much regard to religion, claiming that religious belief simply seems impractical and overly theoretical, being rooted within idealistic values/ beliefs that have no root in concrete reality.
Once more, I did not intend to offend anyone with anything mentioned upon this list, but instead, was merely sharing my personal beliefs of how every MBTI type might approach religion. I respect everyone's personal beliefs/ value systems and am not trying to stereotype/ categorize anyone.
