@Saulot Thanks! It was really all my wife's doing. I never really thought about looking for them but she is a historian and the mystery was too much for her to ignore. 24&me and Ancestry were obtained, and about 3 weeks after I got my results my father's sister did a test that sent up a flag. My wife contacted her, and then from there found everyone else.
It's all still pretty new to me, and a bit awkward since I am introverted as it is. Talking to 'family' that I don't know is a little weird. But bio-dad is very receptive so that makes things easier. Bio-mom is not as 'chatty' with me, sadly. I have tried reaching out a few times since the initial phone call with her (where she seemed receptive), but I don't get much back. Ah well.