Psalm 89:5-7 is written as a chiasm with the phrase "of the holy ones" repeated in the first and last lines. The center is what is being emphasized, "For who in the skies can be compared to the LORD? Who among the heavenly beings is like the LORD?" https://www.howthebiblefitstogether.org/files/Ps-89.5-7a-Chiasm.pdf
Psalm 49 is a written as a chiasm where vocabulary of the first section (verses1-13) is repeated in the final section (verses15-20). The center, which is the climax, is that the upright will rule over those appointed for Sheol (verse 14). https://www.howthebiblefitstogether.org/files/Ps-49a-Chiasm.pdf