The son inherits the nations in Psalm 2 and the good shepherd who laid down His life for the sheep, the king is in 22, 23, 24 directly proceeding 25
I think the two acrostics 25 and 37 are inclusio bookends and punch the idea that the redeemed inherit the earth. Those who fear the lord, the humble the pure and yes 'the meek inherits the earth' in the son and in God. The meek inherit with earth with many Psalms touching on Jesus' sufferings between 25 and 37 making it possible. Book 1 of Psalms is poetically Genesis and this aspect extends poetically Abraham inheriting the land in Genesis to the Psalms Book 1 Ps 1 to Ps 41. (Other similarities to Genesis would be book 1 starts with a man like a tree of life and ends with a man like Joseph betrayed for the sins of the world and quoted by Jesus at the last supper in Psalm 41.)
Psalm 25 also has 'God leads sinners in the way' so an imperfect acrostic could be deliberate. We see a large-scale acrostic breakdown in Lamentations where the first stanza is triple acrostic then the second stanza double and it works down until the last is not at all acrostic, as if someone broke down emotionally in grief. The point is sometimes a departure from acrostic could be deliberate.
In the case of Psalms 9 and 10, they have at least two things going on. In Psalm 8 there is someone who is like a second Adam over creation whereas in Psalms 9 and 10 he is in contrast with the man of the earth who does injustice. As far as a ganged acrostic 9 is like victory is here with the first half of the Hebrew alphabet and 10 is like victory is not yet with how longs and the 2nd half of the Hebrew alphabet Just as the second Adam of Psalms 8 contrasts with the man of the earth in 9 and 10, Psalm 2 contrasts with 3 as there is a son of God in Ps 2 and David is on the run from the son in Psalm 3.