Zulrah accounts also sell fairly well since there are users here who bot Zulrah for their bot farm and are constantly in need of new accounts. 75 range 75 magic 70 def 60 prayer with the Regicide quest line, seen these accounts go for 70-80m each which is pretty good imo, since both magic and ranged can be done with an autoclicker. the only downside is having to train 1-51 agility for Regicide.
edit: I came to sythe with the intention of selling 6 of my rs alt accounts, the first two of which sold were both range tanks which were undoubtedly used for zulrah. Basically people were willing to buy those from me because their sole intention was to bot the account until it is banned anyways so they have no real fear of me recovering the account down the line. If you want to sell accounts without rep, I suggest selling accounts that botters will use because they usually dont care as much about the rep (from my experience)
I was also able to sell three f2p "starter mains" to a user on a botting website who was just looking for accounts with a minimum total level to use for botting.