I also love the Spanish games and take pride in my Spanish flyer collection, took a lot of work to find some of these. I have a lot more but here's a few:

Playmatic: https://nypinball.com/category/playmatic/?post_types=flyers
Recel: https://nypinball.com/category/recel/?post_types=flyers
Juegos Populares: https://nypinball.com/category/juegos-populares/?post_types=flyers
Recreativos Franco: https://nypinball.com/category/recreativos-franco/?post_types=flyers
Inder: https://nypinball.com/category/inder/?post_types=flyers
Sleic: https://nypinball.com/category/sleic/?post_types=flyers
T.D. Llobregat: https://nypinball.com/category/t-d-llobregat/?s=spanish&post_types=flyers
Segasa: https://nypinball.com/category/segasa/?s=spanish&post_types=flyers
Maresa: https://nypinball.com/category/maresa/?s=Spanish&post_types=flyers

Quite a few more if you plug " Spanish" into the search field. Unidesa/Cirsa/Stargame, Sonic, MAC, Cedes, Unidesa, Peyper, Quetzal, Joctronic, Centromatic, MAM, IDSA, Interflip, Bill Port, Petaco, Peyper. The Spanish pinball manufacturers made a huge impact on pinball and a lot of people don't realize how many Spanish Manufacturers there were. Most of these machines never made it to U.S soil, but some people are familiar with some of the more popular ones like Playmatic, Recel and Segasa.