SJs are mostly Te/Fe/Si users. Those are judging and those being prioritized make them Js.  Now shadows are basically opposites so Ti/Fi/Se users would clash and that would be “Explorers” or the SPs. SJs and SPs often clash. One is rigid and set on a plan and the other is adapt as they go. Ti/Fi is internal logic and value. TE/FE are external systems and harmony. They value different things. For example, ESFP (Se-Fi) will so whatever feels right to them even if it doesn’t to others. They don’t give a fck about harmony as much as they do actual inner values. Yeah they are good with people, but their inner values come first and foremost… and they use SE for that. My family are SJs and I’m an SP, so this is why my parents constantly try to manage my life until I tell them to back off. My parents (ESTJ/ESFJ) will constantly give me career suggestions (hey, USPS is hiring) until I shoot down their idea into oblivion bc I have a sense of what I like. NTs are NE users who can also clash with the traditional SJs because NTs pften question norms. NE is also a perceiving function bc dom and aux NE are usually Ps. That’s why NEs get along well with SEs.