Ostraca sounds like a heavier mix of Saetia and the old stuff from Raein. I dig it!
When you explore music in this genre, there are honestly just countless small acts that put out some really intense and well orchestrated music. Most people think of like, evanescence when they think of screamo, but its actually something entirely different that is closer to like 90s black metal.
If you liked the sound of Raein, there are some other suggestions I’d like to offer.
These are (were, sadly) all, like Raein (Italy), European screamo bands and while often named together with their American contemporaries (bands like City of Caterpillar, Circle Takes The Square, Neil Perry, …), I’ve always felt their sound is quite a bit different.
France: Daïtro, Sed Non Satiata, Aussitôt Mort, Belle Epoque, Amanda Woodward, Mihai Edrisch
Italy: Raein, La Quiete
Germany: Louise Cyphre, Tristan Tzara, Zann