I also posted this on the PD48 Wiki
AKB48
Goto Moe: Graduated in 2019, released 2 solo singles
Shinozaki Ayana: Still a member, has not featured on an A-Side
Chiba Erii: Still a member, got her first A-Side on Nemo Hamo Rumor, featured as center on their 60th single, Hisashiburi no Lipgloss
Miyazaki Miho: Graduated in 2022, moved to South Korea for work in October (unknown if she’ll be in the entertainment industry)
Ichikawa Manami: Still a member, has not featured on an A-Side
Kojima Mako: Graduated in 2019, now has a YouTube channel and fashion business called Haluhiroine
Muto Tomu: Will graduate on February 28, 2023
Mogi Shinobu: Still a member, got her first A-Side on Hisashiburi no Lipgloss
Iwatate Saho: Still a member, has not featured on an A-Side
Takahashi Juri: Graduated in 2019, now a member of Rocket Punch
Takeuchi Miyu: Graduated in 2019, is a soloist in South Korea
Nakanishi Chiyori: Still a member, has not featured on an AKB48 A-Side (only on HKT48)
Asai Nanami: Still a member, got her first A-Side on Moto Kare desu, is the captain of Team B
Oda Erina: Still a member
Shitao Miu: Still a member
Nakano Ikumi: Graduated in 2019, presumably retired from entertainment or at least as an idol
Nagano Serika: Still a member, has not featured on an A-Side
Honda Hitomi: Still a member, joined IZ*ONE, got her first A-Side on Nemo Hamo Rumor, featured as center on Moto Kare desu, is an exclusive model for titty&Co.
Sato Minami: Still a member, has not featured on an A-Side
SKE48
Matsui Jurina: Graduated in 2021, released a solo album and single
Asai Yuka: Still a member, got her first A-Side on FRUSTRATION
NMB48
Umeyama Cocona: Graduated in 2022, retired from the entertainment industry
Naiki Kokoro: Graduated in 2019, now works as a musical actress
Kato Yuuka: Still a member, has not featured on an A-Side
Shiroma Miru: Graduated in 2021, released 2 solo singles (V K-Pop influenced)
Uemura Azusa: Withdrew in 2018, now a member of J-Pop group mignon
Murase Sae: Graduated in 2020, produces the fashion brand ANDGEEBEE
HKT48
Tanaka Miku: Still a member, got her first solo center on Kimi to Doko ka e Ikitai
Matsuoka Natsumi: Graduated in 2022
Yabuki Nako: Still a member, announced graduation on October 16, 2022, got her first solo center on Biisan wa Naze Naku Naru no ka?
Imada Mina: Graduated in 2022, never featured on an A-Side
Miyawaki Sakura: Graduated in 2021, joined IZ*ONE, now a member of LE SSERAFIM
Motomura Aoi: Will graduate in summer of 2023
Aramaki Misaki: Still a member
Kurihara Sae: Still a member
Tsukiashi Amane: Graduated in 2020, now a member of J-Pop group FRUITS ZIPPER
Murakawa Bibian: Graduated in 2022, never featured on an A-Side, now signed under Asobi System
NGT48
Hasegawa Rena: Graduated in 2019, now works as a voice actress
Yamada Noe: Graduated in 2022, retired from the entertainment industry