Arguably, even the most devout of devout have their own unique mixture of beliefs, because the scripture is inconsistent and has parts that are unclear.

I’d say that literally everyone has a unique set of beliefs, even atheists will hold into some superstitions, often unaware they are.

I’m atheist, I still do “touch wood” (a pagan thing that got coopted by UK Protestantism, that to prevent a jinx or bring a blessing, you say “touch wood” and tap the nearest wooden thing), cause it does something in my brain, a comforting effect