As a community, we must remain vigilant to encourage EA developers to concentrate efforts on basic game content inclusions first for universal game modes, instead of long-term (six to nine month) gameplay patches, in the interim. Did notice a number of clubs in your listing are now updated with their third kits, after the last squad update (believe 9/24), however, no more were added today in Title Update 2 or the squad update released this morning.
New third kits option now available: Stuttgart, Como, and Monza.
Additionally, do not expect a third kit option for Celta de Vigo, Nantes, or many of the other clubs in Ligue 1 McDonalds; none has had an option for over five years (FIFA 18), and we are still waiting for Sporting CP, Hertha Berlin, Furth, Leeds, and any of the relegated clubs from the Premier League, Bundesliga, or La Liga (Sheffield United, Luton Town, Burnley, Darmstadt 98, FC Koln, etc.)