I'm not sure how I can reach them TBH. I assume their emails and so on are swarmed already as is. But it is a very good idea yas.
Everyone usually has their emails or social media accounts link in their channel's description for business reasons, ABG and Manly respectively. The worst thing you can do is adding more games for them to try.
It's not like you're gonna spam their inbox.
Don't spam their inbox.
As long as the message isn't rude, respectfully and asked normally at the very least they'll take an interest and see it. No big losses.