letters by illit on their album have been analysed, here's what stands out

-all thanked BELIFT's Taeho (CEO), moonhak (VP), gajun (executive and hybe legal/business executive too) and serian heu (creative producer), the same 4 suing MHJ, and whom they mentioned previously at awards.

-all thanked BSH, who seems deeply involved mostly as a producer, but some also see him as an executive

-all mention glitt. only yunah and iroha mention family

-they seem close with their 5 managers (mirae, dohyun, jayeon, yoojung, bokyung)

Individual highlights:
-minju: only to mention a vocal trainer, crediting her for helping with vocals and mentality
-yunah: emphasizes personal growth & always thanks family
-wonhee: shortest, most formal list
-moka: highlights glam and creative teams, socially specific
-iroha: longest list, also warmest, calling her parents -tan and thanking her dog

New info:
-closest producers: VINCENZO & Groom (since pre-debut), plus FRANTS and dyvahh (helpful feedback)
-Kim Nayeon, who invented the newjens bunny, now works with illit, but the group that shares the most staff with them is enhypen