Dramas I think are at least worth trying.

realistic, drama, workplace, poverty, trauma, family, siblings, friendship, infidelity,  forgiveness, unconditional/platonic love, healing, some (healthy and less healthy) romance but not between the leads, now that Lee Sun Kyun is gone this is even more meaningful and tragic

realistic, medical, drama, illness, disability, trauma, grief, family, siblings, friendship, healing, slight romances

realistic, drama, family, unconventional friendship, childhood dreams, forgiveness, healing, alzheimer, ballet, married couple, no romance happens between the young ML and the female character but may be up to interpretation what happens afterwards

semi-fantasy, thriller, drama, teamwork, siblings, friendship, tiny romance but complicated (this one's special for me, my first drama ever + watched with my partner !)

realistic, thriller, drama, action, drugs, dark themes, teamwork, friendship, found family, slight romance

comedy, workplace, teamwork, various friendships, family, no romance actually happens but there is interest between ML2 and FL

realistic, drama, youth, growth, violence, forgiveness, friendship between f/f, m/f and m/m, family, teacher-student bond, no romance

semi-realistic, medical, very idealistic, grief, trauma, autistic/ocd ML (?), selfless ML, forgiveness, teamwork, life, hope, growth, very deep and healing friendship between the two MLs, family, unconditional love, very vaguely hinted romances but up to interpretation (adapted from a novel which does contain romance between ML1 and a nurse + ML2 and another female character)

fantasy, drama, cult, trauma, writing, siblings, deep friendship, family, forgiveness, growth, hinted romances here and there

Season 1 and 2.

realistic, thriller, drama, friendship, alexithymia, great platonic partnership between ML and FL

realistic but some suspension of disbelief needed, thriller, drama, child trafficking, family, unconditional love, growth, no romance

realistic, thriller, drama, life, extremely sad, family, friendship, siblings, trauma, grief, romance

hard sf, drama, philosophical, not for casual watch : either you're intellectually and emotionally very engaged or you will be bored to tears, unique and indescribable, sad and intense, fascinating characters, broken idealism, lots of different themes, beautiful unusual friendship, married couples but no actual romance, many issues imo but many good things as well

realistic, thriller, drama, youth, unreliable narrator, friendship, insanity, growth, family (or lack thereof), married couples and some vague romances (but not very healthy)

realistic, drama, unhealthy romance main plot, autism, mental illness, healing, growth, forgiveness, siblings, family

Just the first season. 

realistic, thriller, forensic art, psychology, teamwork, great friendship and partnership, forgiveness, growth, healing, no romance

fantasy, horror, drama, demons, exorcism, catholicism and shamanism settings, truly platonic trio m/m/f, very deep friendship, no romance

realistic, drama, youth, violence, friendship, fighting, trauma, growth, no romance

realistic, drama, just life, multiple romances, work, family, some friendship here and there

thriller, comedy, fighting, catholicism setting, teamwork, friendship, healing, growth, no romance

realistic, thriller, drama, psychologically violent, friendship/partnership, family, no actual romance

realistic, thriller, drama, teamwork, friendship, hinted romantic interest but nothing more, family, questionable ending

sf/fantasy, thriller, drama, aliens, questionable plot but tight realisation and pacing, siblings, friendship, questionable ending, hinted romances

realistic, thriller, drama, arson investigation setting, psychological issues, teamwork, family, childhood friendship, strong m/m/f friendship with vaguely hinted potential romantic interests towards FL that are up to interpretation, no other romance, questionable ending

realistic, drama, mainly romance, siblings, family, SADNESSSSSSS, selfless FL, good values

realistic, drama, workplace, sports, family, friendship, siblings, trauma, grief, healing, no romance that I can remember 

realistic, family, youth, life, mostly romance, some friendship, joy, sadness, growth, simplicity, N.O.S.T.A.L.G.I.A (too much send help)

realistic, drama, workplace, growth, teamwork, friendship, very hard psychologically, alcoholism, married couple but no other obvious romance (that I can remember)

realistic, drama, workplace, alzheimer, family, grief, some romance (married couple and other)

thriller, drama, family, siblings, some romance I guess more or less (not with the ML)

historical, drama, sadness, more drama and more sadness, war, side romances, very strong friendship, family

fantasy/sf, drama, terminal illnesses, cancer, trauma, doesn't really make sense, deep friendship, siblings, family, no romance