For those schools that “recommend” the SAT subject tests, it is likely that they expect typical applicants from high SES backgrounds attending high schools where students apply to highly selective colleges on a regular basis to present them, while giving some slack in this area to first-generation-to-college students attending high schools where relatively few go on to college (and usually to the local community college or non-flagship public university) where there is little awareness of SAT subject tests among students, parents, and counselors (so that the students may not know in time to sign up for them).
Your EC list looks long, but does anything stand out compared to other applicants who have state or national recognition for their EC achievements?