Upvote:2
The once returner just destroys the 3 fetters and reduce lusts
Again, SΔriputta, consider the person who is accomplished in the precepts, but not in concentration, nor in wisdom β by destroying the three fetters and reducing lust, hatred and delusion, he becomes a Once-returner, who returns to this world again once only and makes an end of ill.
This, SΔvatthi, is the sixth person, who, dying with some attached remainder, is altogether freed from hell, rebirth in the womb of an animal, the realm of ghosts, from the untoward way, the ill way, the abyss, hell.
http://obo.genaud.net/dhamma-vinaya/pts/an/09_nines/an09.012.hare.pts.htm#p1
Apparently the first people who are ''moderately'' good at concentration are the ''Clan-to-clan-goer''