Hey! I'm Jake Loranger, a composer / sound designer. I've never worked with trackers before, so OpenMPT would be new to me, but I took a look at the video you linked and I don't think I'd have any trouble using it — actually, I would welcome to opportunity to give it a try, since it seems like a really interesting way to write music.
My Discord is _amrnthne#9499, and you can find my portfolio here. I have some more specific examples of my work that I can give you as well, but I'll save that for after you've sent me a message. Cheers!
- Jake