﴿فَمِنْهُمْ شَقِيٌّ وَسَعِيدٌ﴾
Among them will be the wretched and the blessed. (Hūd 11:105)
The pronoun in minhum refers back to the collective mentioned in the preceding context. That one population is then differentiated into the shaqī and the saʿīd.
The point is not merely to list two adjectives; it introduces a major contrast of conditions within the common setting of Judgment Day.
Sharing the same setting does not imply identical outcomes for the two groups.