Hey, welcome! I hope you enjoyed them.
Those 19 eps are basically the official re-edit of their scenes only, released here:
https://www.lasestrellas.tv/telenovelas/juliantina
It’s mostly what you’ve already seen but with a few key differences, some scenes are longer or use different takes, a few deleted scenes have been put in, most notably from the finale, so those might be worth a watch. But you’ll need a Mexican VPN to access the site above and it’s not subbed. I’m actually not entirely sure where you can find those extra scenes subbed, but they must be around somewhere… Does anyone know?