Rangers went through as much training before they went their battalions.
That is a proposed pipeline, it is not in effect at this time.
Current pipeline:
11series and all support mos's (non nco)- Basic/AIT, airborne, pre-rasp, rasp then to battalion. top performers go to surt/ranger school straight out of rasp
68W- basic/ait, airborne, pre rasp, rasp, pre socm, socm. sometimes they go to surt/ranger school before socm, but this is not common
13F/25U/C- basic, ait, airborne, pre-rasp, rasp, regimental commo course, go to batt.