Ranking.net recently conducted a survey for the best idol group ranking.
Out of the total 163 groups recorded, the groups formed by Yasushi Akimoto are ranked in the top 60.
Meanwhile Nogizaka46 took first place with the most votes.
This survey took a total of 29650 votes from the 7348 participants who took part.
Full rank: https://ranking.net/rankings/best-female-idol-groups