You will notice the tag attached to the filename. In the context of scene releases, AiRISO refers to a specific warez group known for compressing and distributing virtual instrument expansions in an ISO (disk image) format. However, from a functional standpoint, an AiRISO release typically means:
A hallmark of Bigtone's design is the extensive use of the modwheel, aftertouch, and pitch-bend to create sounds that evolve over time, making them feel like hardware-grade synthesis rather than static samples. ReFX Nexus v2.2 Bigtone Signature 3 Expansion Pack - AiRISO
While marketed for EDM, these presets work in: You will notice the tag attached to the filename