New Liturgical Movement has a report on a Mass in the Extraordinary Form celebrated a as part of the the National Catholic Youth Conference of the USA. It took place on the Feast of St Cecilia and was very well attended as the picture below illustrates.
I understand that the venue for the Extraordinary Form Mass was moved to one of the largest churches in Indianapolis because a large congregation was anticipated. However, the number of young people who actually attended exceeded all expectations. The article does not record how many attended the Novus Ordo Mass.
The picture clearly demonstrates that a large number of the young people opted for the Latin Mass. There can be little doubt that this form of the Mass is proving to be increasingly popular with young people, especially in America. There is also evidence that the same trend is occurring here in England.
The link address for the NLM post is:
http://www.newliturgicalmovement.org/2019/11/tradition-is-for-young-ef-mass-at.html
The article includes a video of the Mass.