The middle and Bottom are the only ones i know how to do out of this set.
the middle is part of the Heart of the Island content, those blue chests that refuse to open. you have to complete the Heart's second quest to get a blessing which allows you to open the four blue chests, one in the forest ruin, one in the shadow maze, one in the Spider Cave, and one in Murkhal/the Skull's chamber. be warned that if you have taken any of Murkhal's power, he can brainwash you into corrupting the Heart which sidelines you into a bad ending at the completion of the Heart's storyline, but you can avoid it by collecting the Aquamarine from the Naga that appears on Talitha's beach at night and then giving it straight to the Heart after she assigns you the quest. once you have all four artifacts, talk to Idrune and she will take them for study with your permission in order to enhance their power. the scene occurs either the next day or when returning to camp after expending all of your energy, with the artifacts returned to you and with their powers enhanced.
the bottom one is part of Tulip's content. the subplot of introducing Galan to sex which actually doesn't get flagged by Tulip wanting to talk and is actually only triggered by talking to Galan each day to check in on him.it gets started with galan mentioning that he wants to have sex with Idrune, you tell him to talk to her, he screws it up because he's shy, you tell Idrune and that will lead to Galan and Tulip having sex. continually check in on Galan and Tulip and after Idrune's second sex scene, eventually you can offer to try to set up an encounter between Idrune and Galan; with Idrune being far more receptive following her second scene and insisting you join in.
that white haired woman in the top picture i have no idea. I think she might either be a dummied out bit of content or she's tied to one of the islands many secrets (my bet is the temple south of the shadow maze temple with the hammerhead mural on the wall)