If this is not what you were looking for, here are two other possibilities:
The world of digital music production frequently balances the quest for realism with the need for efficiency. For decades, the SoundFont (SF2) format has served as a reliable bridge between these two demands. When applied to the pipe organ—an instrument known for its massive physical presence and complex acoustics—the SF2 format offers a lightweight, versatile solution for composers, hobbyists, and church musicians alike. pipe organ sf2
A smaller, intimate "chamber" organ SF2 that is perfect for Baroque or early classical music. If this is not what you were looking
While advanced formats like VST3, Kontakt, and dedicated software like Hauptwerk offer ultra-realistic physical modeling and massive sample sizes, the humble SF2 format retains distinct advantages: versatile solution for composers