Our local public HS has no rankings either, no Val/sal, no cords at graduation for top students and the like because they are adamant that these comparisons/potential goals create unhealthy behaviors.
Similarly, they believe (admin and board) that giving colleges info that might allow the AO to compare students, like decile rank/GPA, is also inappropriate because it could harm a given student’s admission chances…so nothing beyond a rudimentary GPA range, nor a rating of a student’s level of rigor in their curriculum in the counselor letter. This is a well known, affluent public school with a college going culture where unhooked students in the bottom half of the class regularly go to top 10% colleges.
Back to OP, Questbridge still might be worthwhile but I understand if the time investment doesn’t seem compelling.