Michael Wilson is the clear top receiver now. He was already out-producing Harrison when given the chance — he posted 1,006 yards, 7 TDs on 126 targets in 2025, and after the Harrison trade he's logged 30 targets over the last two weeks (13 in Week 4 alone), establishing himself as the focal point of the passing game alongside elite TE Trey McBride (from the Michael Wilson and Arizona Cardinals pages). He also just signed a 3-year, $75M extension, showing the team believes in him as the future.
Beyond Wilson, the wiki doesn't detail a clear #2 receiver — the pass-catching hierarchy is really Wilson + McBride, with RB Jeremiyah Love as a receiving threat out of the backfield. Matt Harmon noted Wilson was already destined to slide into the X-receiver role, so he's the main fantasy beneficiary of the trade. Just keep in mind Arizona's QB situation (Brissett/Minshew/rookie Carson Beck) caps the ceiling of the whole passing attack.