Another email question - I'm getting email for another person to my gmail.

So, I have a gmail address that I use for certain websites, not my main gmail email account, something.something@gmail.com. I'm told that from gmail's perspective, that is the same as somethingsomething@gmail.com. The "." between the email is irrelevant to gmail, if you have one, you have all combinations of that.

Anyway, for a while now, I have been getting emails for someone who isn't me. They are addressed to my email address (the somethingsomething@gmail.com), but not addressed to me. Nothing real personal, most of them are a church leadership email group sending out updates.

I have ignored them simply because I figured at some point the person who isn't getting them would realize that they aren't receiving expected emails and they would correct it and it would stop. But it hasn't.
I got a new one last week from a medical facility asking me to sign up to view my chart. There was an unsubscribe, so I did that.

I did change the password on the account, but I'm still getting those emails from time to time. I'm stumped as to why they haven't stopped.

I did reach out to google forums, but was assured that if it's my email and I have the password, then no one else is using it.

Not sure if I need to do something. I guess I could email someone on the church list, but I sort of hate to do that, not wanting to embarrass someone.

Any thoughts?