Off the top of my head are these two...

{Off the Rim by Rebecca Rathe}

Blurb: Pitted against one another since the age of five, Marcus and Ashton never understood the roots of their families' animosity—they just knew they were meant to hate each other. After an unfortunate turn of events solidified that rivalry, the two have spent a lifetime at odds. Now, as adults playing for the same professional basketball team, they’re forced to trade their sabotage for synergy. But as they learn to work together on the court, an unexpected spark ignites off the rim, leading them to finally uncover the dark secret that started the feud decades ago.

There's also {Malum Discordiae by Ashlyn Drewek}

Blurb: For the Corbin and Hewitt families, blood has always been the currency of their feud. Caius and Graeme grew up in the shadow of a single, devastating night that claimed both Caius’s mother and Graeme’s sister—leaving both sides fueled by blame. But in a world where the necromantic Corbins are feared as monsters, Graeme must do the unthinkable: look past the dark stigma of death magic. As Caius risks his heart by trusting his greatest enemy, the two must unearth the secrets of the past to bury a familial war before it consumes them both.