Führer (Adolf Hitler)
Prior to 1934 the SS were nominally under the command of the Sturmabteilung and so it could be said that both Adolf Hitler as Oberster SA-Führer and Ernst Röhm as Stabschef SA outranked the most senior SS position of Reichsführer. Following the Night of the Long Knives Hitler "raised the SS, hitherto subordinate to the SA, to the rank of an independent organisation". Hitler also was considered SS Member #1, Emil Maurice (considered the founder of the SS) was Member #2, while Himmler was SS Member #168. Based on the seniority system of SS membership number, this made Hitler senior in the SS to all other members even if not by rank.
After the Night of the Long Knives, when the SS became independent from the SA, Hitler was listed on SS officer rolls as Member #1 and considered supreme commander of the entire SS by virtue of his position as the Führer of Germany. There is no photographic record of Hitler ever wearing an actual SS uniform nor was there a special SS insignia for Hitler above that worn by Himmler
Read more about this topic: List Of SS Personnel