Users can mimic pulling multiple "stops" by layering different SF2 presets. Polyphony:
Even if the SF2 has built-in reverb, adding a high-quality algorithmic or convolution reverb VST at the end of your chain will make the instrument sound like it is sitting in a real, massive space.
Because the SoundFont community has been active for decades, there are a few legendary free files you should search for on archives like Musical Artifacts, Polyphone, or Internet Archive:
If you are looking for high-quality sounds without the price tag, several community-driven projects have archived legendary organs: