Yes, MS said they'll continue releasing games in other consoles.
Regarding the next batch of old games to be ported to PS pretty likely would include Forza Horizon 5, Halo or Starfield. But I think the most likely one is Forza Horizon 5 since it's the one with the biggest sales potential.
Regarding Halo, I assume that before releasing Infinite they'll release the MCC. But I assume that before releasing Halo and Gears, or a recent "big hit" like Starfield or Hellblade 2 they may release other titles like Forza, Forza Horizon, Flight Simulator, Rare Replay, Killer Instinct, etc. to get their fans more used to it before they put their big names like Halo, Gears or Starfield in the competitor consoles.