Langrisser series (first originally released as Warsong on the genesis) has Commander/troop based battles, but it’s a bit more abstract (one commander + a specific troop type, as opposed to the unit variety in Ogre Battle). But it’s also turn based outside of battles. Also the way troops work evolve over the series (they start out as discrete units but later on you’ll have troops that are directly attached to heroes). But you can get the remakes of I and II on steam right now.
Likewise, the PC Disciples series (the first two anyway) is turnbased outside of battles as well as in. Unlike Ogre Battle, you manually select all unit commands and battles continue until either someone wins or someone flees. But this combat is IMO closest to what Ogre Battle did, and it has some branching unit evolution paths that can be pretty fun. The world map game plays pretty differently though, with you just controlling a handful of squads as opposed Ogre Battle’s much larger active roster. Also, the maps are much more populated, with you going around collecting resources/fighting neutral monsters/investigating ruins and such to level up your units/hero (as opposed to Ogre Battle where you largely fight the enemy troops).
Sadly, Ogre Battle is a form that has been mostly forgotten by gaming at large.