Decided to grind a few hours on this today to finally get a competitive rank, considering I've had the game since release you'd think I would have earned a rank a long time ago. Managed to get Silver Elite Master in the end. Don't know how good (probably bad) that is.
I fail at this game compared to Source
Same as you after a bit of googling as below:
"SFUI_ELO_RankName_1" "Silver I"
"SFUI_ELO_RankName_2" "Silver II"
"SFUI_ELO_RankName_3" "Silver III"
"SFUI_ELO_RankName_4" "Silver IV"
"SFUI_ELO_RankName_5" "Silver Elite"
"SFUI_ELO_RankName_6" "Silver Elite Master"
"SFUI_ELO_RankName_7" "Gold Nova I"
"SFUI_ELO_RankName_8" "Gold Nova II"
"SFUI_ELO_RankName_9" "Gold Nova III"
"SFUI_ELO_RankName_10" "Gold Nova Master"
"SFUI_ELO_RankName_11" "Master Guardian I"
"SFUI_ELO_RankName_12" "Master Guardian II"
"SFUI_ELO_RankName_13" "Master Guardian Elite"
"SFUI_ELO_RankName_14" "Distinguished Master Guardian"
"SFUI_ELO_RankName_15" "Legendary Eagle"
"SFUI_ELO_RankName_16" "Legendary Eagle Master"
"SFUI_ELO_RankName_17" "Supreme Master First Class"
"SFUI_ELO_RankName_18" "The Global Elite"