I made an attempt to make the Oades Family Tree/Octopus
Obviously it's imperfect, and I'll need to come back and add some clarifications, but it's a decent mock up for the Oadlings hc/au family connections! <3
edit:
explanations:
So first off I'd love to do a more detailed & better structured version, potentially with more characters, but most family tree software won't let you denote multiple partners, step parents, adoptions, AND various half siblings so for now it's this clusterfuck flowchart
Bobby and Thomas are full-blood siblings, Matt is their half brother via their mother. Les, Darly & DeeDee (twins) have the same father as them, but two different mothers
Alain, the father of the four half sisters who would go on to become the mothers of the canonical Oadlings, had terrible luck and two of his three wives passed away, with the 3rd outliving him
Matt Oades is gay and had a lavender marriage with a (lesbian) friend named Maya. They legally divorced after he was caught having sex with a man in an attempt to spare her any persecution. Because they're still friends (ofc) Maya and her partner Selene are the ones to adopt a bastard child (Rufus) that is either Darly's or Bobby's (he's Darly's) and stay in a degree of contact with the family
Wylde is Matt's son from his younger days, with his conception owed to an exploded van motor, a bad wig and a lot of psychedelics. Matt & Micah love him very much, but did not know of his existence until quite recently.
Matt briefly marries Janice after she has a few unsuccessful marriages after Bobby (not pictured), landing her with the Oades surname again by the episode From The Cradle to the Grave, but it had been terminated by then for some time as when gay marriage was legalized he divorced her to marry Micah Miller, the man who he loves and has been in a happy and stable relationship with ever since
Johnny's biological mother Roz was in an open relationship with Nile Dreer, a semi closeted trans woman. Roz passed away after giving birth to Johnny due to complications and, though they weren't married, she listed Johnny's biological father Bobby Oades as the father on the paperwork meaning he was given the surname. Nile suffered from a large amount of substance abuse due to grief, so Bobby and various Oades grandparents were the ones to have primary custody with some visitations granted to Nile
Coral had/has bouts of stalkerish level obsession with Les, but because he's infertile would, when his interests began to wane, hook up with Bobby (and maybe others?) and claim the resulting pregnancy was his. She did the math wrong with Errol's conception and the results were a paternity test and a divorce
Frodo's parents are Thomas and Kara, but his biological father is Bobby, with Bobby getting Kara pregnant, leaving her for Janice, Thomas confessed his love and they married. They had a brief, two year divorce, but reconciled and remarried as they really do love one another very much
Ptyir was only able to connect with the family after his mother and grandfather had died, and then initially only with the "aunties'" Maya and Selene. He's very close with Rufus, who was also only permitted limited contact with his cousins, but more recently after Bobby was jailed and Errol's sentencing went to trial they've begun to initiate further contact
Family titles are quite fluid, with an example being Janice referred to as an aunt, a mother, a godmother, and an "auntie-mum"
If you have anything else you'd like clarified please don't hesitate to ask, I love to talk about these guys! <3