I'm skipping Mike and will since they're 15-14 but if it's true in season 5 that they're the age of the actors I will edit this
Robin Buckley: obviously you two can't really get pregnant together but there are other ways! Robin suggested a surrogate which you happily agreed with
Steve Harrington: he was excited but you were nervous he would've left you when he found out but he already told Dustin and bragged about it
"I already imagined like six or 5 little Harringtons"
Eddie Munson: he was happy but anxious what if he taught your child the same thing his father taught him but you reassured him and he was excited uncle Wayne was happy for the two of you and even helped you get a small starter House for the three of you
Billy hargrove: you thought he would immediately pack his stuff and leave knowing he would never want responsibility
So it was best to tell him and get it over with and mentally prepare yourself
He wasn't mad or he wasn't gonna leave you
He was scared, happy, and actually wanting the kid
But he didn't wanna be his dad he was afraid his anger would get to him and do something to them
You told him he wouldn't and if he was angry or upset that you would help him calm down
Bonus!
Argyle: he was so confused when you told him
He was high so that's probably why but when he wasn't stoned you told him and he was excited and he celebrated with you and Jonathan with pizza
And he promised not to smoke around you or the baby and he would only do it on special occasions
Jonathan: he thought you were lying until you showed him the test
By his reaction you thought he wasn't ready so you tried to take it away from him
He refused but had a smile on his face until he hugged you
Joyce was excited for the two of you she even helped you shop for the baby boy/girl when you found out the gender
You eventually named it sorta after her since she was a huge help to the both of you