I'm not gonna answer straight and only give you a hint first. In that link you've just used, remove '''"EVERYTHING"''' from the '''"/"''' slash on the right side of the .jpg all the way to "?cb=(number code)" and press enter so that the image will show in its full size. If you still can't identify them, ask again.

Thanks, I do love the bigger picture. But my problem is that I'm relatively new to AKB48 fandom and haven't learned everyone's name/face combinations yet. Care to help with this one picture?

Sure. From left to right, Yamamoto Sayaka (NMB48, currently a graduate), Matsui Jurina (SKE48, about to graduate), Takahashi Minami (AKB48, currently a graduate), and Miyawaki Sakura (HKT48, currently in IZ*ONE). All are 1st Gen members of each of their respective sister groups.

Thank you so much!