The return of MLS is still three weeks away due to the outbreak of COVID-19 but teams have started making moves to fill out their rosters. Outside of the shock return of Leandro Gonzalez Pirez to the league (with Inter Miami), most moves are signings of Homegrown players. Wikipedia actually has the most current, comprehensive list of Homegrown players actively in MLS.
You’ll see Sporting Kansas City have nine current Homegrown players, including Richard Sanchez who signed a Homegrown deal with FC Dallas (the most prolific team at signing Homegrown players) before making his way to the Chicago Fire and ultimately, SKC.