John Gill Commentary 1 Kings 1:26

"But me, even me thy servant, and Zadok the priest, and Benaiah the son of Jehoiada, and thy servant Solomon, hath he not called." — 1 Kings 1:26 (ASV)

But me, [even] me thy servant
Meaning himself, Nathan the prophet, who was David's servant, his seer, and counsellor:

and Zadok the priest ;
for whom David had a great respect:

and Benaiah the son of Jehoiada ;
who was captain of his bodyguards; here Nathan observes more than Bathsheba had, and supplies what she had omitted, and so filled up her words, as in (1 Kings 1:14) ;

and thy servant Solomon, hath he not called ;
which showed his ill intention.