Boxing per this: https://www.independent.ie/sport/other-sports/boxing/boost-for-future-of-olympic-boxing-as-ioc-accepts-overhaul-of-qualifying-system-41516035.html
The top eight ranked boxers in each of the 13 Olympic weight categories on December 31, 2003 will qualify for Paris.
Boxers will earn qualification points in a new Golden Belt series being run under the auspices of the IBA in 2023. The number of Golden Belt tournaments which will be run next year, and the number of qualification points awarded at each tournament, has not been published.
The situation is further complicated because the IBA suggests that boxers from two different weight categories can earn qualification points for one of the Olympic weight categories. So, a 54kg boxer could qualify for the 57kg Olympic weight category.
Following the initial allocation of Olympic places there would be a second allocation on March 31, 2024 which would again be based on the ranking system.
However, the then highest ranked boxer – not previously qualified - from each continent (Africa, Asia, Europe, Oceania, and Pan America) would be guaranteed a place
The two final spots in each category would be decided at a World Qualification tournament which would be held before May 2024. The two finalists in each category would be allocated an Olympic place.
Some spots are missing, I am assuming host quota and wild cards.