Help please!!! Unknown Engine rattle

Hi all,
I have a rattle in my engine!

At first I thought it was the top timing chain tensioner so it was replaced, which quietened the noise but it was still there.
I then replaced oil and filter thinking it was the oil wearing thin, the noise dampened for a bit then appeared again, now it is getting louder , the noise disappears when at running temp but I have heard it while idling at running temp also.

So I guess I'm at a stand still as to what this noise may be and I have searched this forum and every discussion that looks like it may help me figure it all out is no longer available.