Sorry. For some reason the photo didn't upload last night.

Thank you.
I have an old vigorous Apple that has over 20 varieties on it :)
But I've never grafted to specific rootstock I purchased to graft to and wonder if leaving both will impact negatively.

The lower graft had been growing longer so it seems more vigorous but not sure if that is the case.

I guess my main question is I remove the lower one, will the tree grow that much quicker? Gauging the significance of that...

You should remove one. Had you grafted them closer together you could have set it up as one variety in the left and one on the right.

But it with that one so low I'd get rid of it. If you have access to more rootstock and scion cut it now. If not leave it for this year and use it to graft next year.

thats what I would do at least

an alternative you can look into is air layering. You can root the rootstock above the first graft and get two trees out of it.

Sorry for some reason I envisioned a larger tree that you had originally grafted and then added the other variety to at a later date. I would remove the lower graft as well. You dont want to have a branch originating from that low to the ground for the life of the tree. You can multi graft your pear as the tree matures, just like you did for your apple.