A Idols (Male) and Music series from 2021 worth adding to your list.
School begins at Étoile Vio School, where idol-hopeful students known as "I-Chu" will undergo training to become full-fledged idols. However, things are off to a strange start when the new students are given a speech from their bear principal?! The I-Chu work steadily toward their goals and ask, "What is an idol?" Each boy will learn to shine as they struggle to find their answer. (Source: MAL News)
Plot summary from MyAnimeList. Data and images via Jikan API.