In case you did not read the sutta:
"[Some,] with the wasting away of the three fetters, are 'one-seed-ers' (ekabijin): After taking rebirth only one more time on the human plane, they will put an end to stress.
"Or, not breaking through to that, not penetrating that, with the wasting away of the three fetters they are 'family-to-family-ers' (kolankola): After transmigrating & wandering on through two or three more families [according to the Commentary, this phrase should be interpreted as 'through two to six more states of becoming'], they will put an end to stress.
"Or, not breaking through to that, not penetrating that, with the wasting away of the three fetters they are 'seven-times-at-most-ers' (sattakkhattuparama): After transmigrating & wandering on among devas & human beings, they will put an end to stress."
— AN 3.89
Obviously a sotapanna does not have to be reborn 7 times, he/she may attain the higher stages or nibbana in the same life.
Still referring to the original question this explanation seems that there is either 3 different levels of a sotapannas attainment or different names for Sakadagami and Anghami.