MLB At Bat gives you that. It’s now $29.99/year to subscribe. You get the radio calls from each team. (Have subscribed since it became available, which has to be at least 15 seasons ago, maybe closer to 20.)
https://www.mlb.com/live-stream-games/subscribe#
The stream is always a little behind those who get TV coverage by cable or over the air, so if you follow in-game threads while listening, you may notice that when people post reactions. Same if you follow the MLB game tracker online.