I suppose I’m questioning why you’d need several SSH keys to begin with. The only place you should have your private ones is on highly secure places (mine are on my password manager and pc, encrypted). Would there ever be a case for you where only one of them gets breached? Surely if someone gains access to either of those places that’s all your keys gone.
Asking because managing one key is easier than managing tons for me.
Not your fault if they gave you prod access. I know people that got fired over this when it’s decidedly not their fault