The 9th gen blog is titled Q期 ( Q-ki ), a play of words at their generation name. In Japanese their generation is pronounced as kyu-ki ( 9期 ), hence Q-ki.
The 10th gen blog is titled 天気組 ( Tenki Gumi ), also a play of words at their generation name. 10 generation, can be read as 10-ki hence 天気 pronounced Ten-ki means weather and 組 on its own is pronounced Kumi means group. The Weather Group