This is a support tier list for gold/plat solo queue. Based mostly on stats as well as my opinions. Keep in mind that if you main a champion, even if it's in a lower tier, it's still worth playing something you're experienced on rather than a "strong" pick that you're not experienced on.
My main lane is support and this are my picks in season 7 and now in the preseason 8 . They work at bronz, silver, gold and plat for me.