I'm just using google translate myself but the girls are sorted by release order by recruit category as I mentioned.
Just look for the current event unit, which is Bertha, and the next event unit should be right under her, which is some loli Jade unit with a big green sword. Google translates her name to Face/Faith.
Likewise with new Platinum Recruit, look for Velka, the current one and the next one should be below her. If you're wondering about Claude, we already got her but they removed her for some reason, they didn't even put her in properly. She was suppose to be with Kitley's exclusive but they threw her in regular Platinum for during that time. Not sure what's gonna happen with her in the future.