It really depends. A bond exists in the SR which is not a place of linear time. If you go by when a reliable narrator would say that they noticed a spren around them then Shallan seems to be the first (that we know of) about ten years ago(ish) followed by a couple of unclear experiences by Jasnah and Tein(Jasnah's childhood illness leads people to suspect it could actually have been earlier) followed by Kaladin who in turn is followed by Lift and Renarin followed by Dalinar followed by Szeth then Teft then Skar then Drehy. According to the GB however Nale has spent the past two decades at least hunting down radiants meaning we missed a few. This is only a really rough guide though.