I can't entirely rule out the possibility that there is a God who loves some of us, yet is indifferent to others.
It's certainly a hypothesis that fits the observations made over my six decades of life.
Why do you assume that (at least) the Judeo-Christian God is indifferent to anyone?
I'd think it would make more sense to say that there's a God who loves some and doesn't love others.
I don't think God is indifferent to anyone. The Bible says that God doesn't want anyone to perish.
If you're trying to figure out who God is, based on your observations, you should acknowledge to yourself that your base of observation is limited in time and space. Men have come up with all sorts of explanations about who God is and how He acts, and even whether He exists at all.
It is better to know Him than to try with our limited abilities to define Him. He has reached out to us in His word. If you haven't already done this, ask God to reveal Himself to you, and then read the Bible.