https://www.thecubreporter.com/book/mlb-roster-rules-presented-arizona-phil-22
AZPhil has a good explainer on Waivers
“If a player is claimed by only one club, that club is awarded the claim. If more than one club makes a claim, the club with the lowest winning percentage (regardless of league) either from the previous season (beginning on the day after the conclusion of the MLB regular season through the 30th day of the MLB regular season) or on the day the player clears waivers (beginning on the 31st day of the MLB regular season through the last day of the MLB regular season) is awarded the claim. If two clubs with the same winning percentage make a claim, the club in the player's own league is awarded the claim. If two clubs from the same league make a claim and they are tied in the standings, the club with the lowest winning percentage from the previous season is awarded the claim. If the clubs are still tied, standings from two years back (or three years back, four years back, etc) are used to break the tie.“
the current waiver period ends Aug 31.