I provided you with a few links sometime last week.
First book on your list: Drama, by Raina Telgemeier. It's set in middle school, exactly when kids are dealing with puberty and their sexual orientation. It includes at least one character who is gay. So what? If you don't have problems with heterosexual explorations in literature, it's just your own bias to draw the line at gay relationships. It's not going to turn any straight kids gay. It very well may give an already gay kid some sense of belonging. Representation matters.
book #2 on your list: When Wilma Rudolph Played Basketball, by Mark Weakland. It's about Wilma Rudolph -- one of the greatest American track stars -- who grew up under segregation in Tennessee. Is she unworthy of being the subject of a book? Should a book about her life completely ignore the circumstances around her?
book #3 on your list: Lawn Boy, by Jonathan Evison. This is a book intended for older teens and young adults. It's semi-autobiographical. The protagonist is exploring his sexual orientation and dealing with racism. There's a scene where an adult recalls a sexual encounter with a 4th grader... when he was also a 4th grader. Why should high school students not have the option of whether to read this book or not for themselves?
Feel free to pick and choose some tough ones for me to address.
If you want schools to be safe places to learn, deal with poverty and violence, not books that make parents uncomfortable. Education is inherently uncomfortable. You don't grow from a place of comfort. You have to challenge your current understanding to grow. The concern that teachers have gay agendas or are trying to indoctrinate students is without merit. They want kids to become better critical thinkers. They want kids to be challenged. The classroom has long been a safe place for that because there's an adult who planned it thoughtfully and is monitoring it.