Surely your different upbringing is a source of pride though? Or at least a neutral thing? You aren't better or worse, you just had a different upbringing.
There will undoubtedly be clues to those people and that's fine,.it shouldn't be something you need to hide.. surely you're just living life the way you want to live it not box ticking MC interests?
DH is from a similar background to yours and very professionally successful too. He loves opera and art and sailing now. But we also do bits from his childhood that he loves and I had never experienced, like bowling and crazy golf and opening all the presents first thing on Christmas morning rather than waiting till after church
You don't have to try and hide your background, or deny it is part of you. That's when it becomes fake and uncomfortable
I know plenty of professionals with a similar story but they all have kept aspects of their childhood cultures too, whether that's continuing to support a favourite team or trips back to a favourite holiday destination.
There's no "better " or "worse" about being MC/WC. There's no shame in being MC who has fallen on hard times. Or anything hugely extraordinary about WC made good. It's just a different starting point and luck and genes and tragedy and health and happenstance and hard work all play a part in where we end up.
I know truly dodgy ways people have got wealthy, so I don't worship wealth. And harrowing stories of how people have ended up poor, so I don't feel better than someone with less. I just am. Me with the childhood I have and the life I have now. DH with his own childhood and the life he has built. And we have tried to merge our favourite bits of both to give our children a childhood that feels true to both of us