FSSP/Indult/ICK/Diocesan TLMs/Motu Masses: Probably at least 10,000 of the world's 400,000+ Priests (2.5%). Some 100 MN faithful. Will probably grow to at least 50,000 Priests, and so hopefully some 500 MN faithful (5X increase), by 2050, the way the TLM is growing and spreading within the Roman Catholic Church.
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What are the fruits of the Indult? Well, a large percentage of those people are living in adultery that is sanctioned by their false religion, and receive the sacraments. The Indult completely accepts the fake marriage annulments that are contrary to Catholic teaching and practice on marriage for almost 2,000 years before Vatican 2. Sure, they like Latin and chant, but they love their divorce/remarriage system as well, and defend it and practice it.
One case is too many, but in the Indult there are a significant percentage of people who live in church-sanctioned adultery, and receive the sacraments with the blessing of the clergy. Even the ones who don't still believe in practice that they can abandon their spouse if they want to without committing sin, as long as they don't get "married" again.
Since you asked, these are extremely rotten fruits.