Children's [4-5yrs] books that normalize poly parents - eviltoast

I’m in the market for books that normalize poly parenting. I have the Red Stroller for normalizing different family types (eg. single parent, gay, interracial).

My child’s other parent (separated) is very conservative and my family is too. I’m not trying to “push” poly, but prepare my kid mentally/emotionally if people say shit about me. I still have several years before I would need to come out.