What is FUTSAL TITLE in FIFA 23

Lately, i'm playing some Fifa 23. I found something called FakePlayers. I found it in club transfers on my ps4. In detailed search, on the league's it says some random "leagues" like FUTSAL TITLE and CREATION CENTRE and something called team.abber or something like that. There are about 9 pages of generic players and most players are named FAKEPLAYER. I found out that some of the fake players are also named like Flip Kuipers and L. Hoedemaker. Those players are older generic players from older Fifa games. Is this just a dump or an Easter egg? I am very interested because all the players have different nationalities, heights, and weights and even player traits. What is the point of this lol. Thanks.