You rang?
Yep, here’s one that may be relevant;
I see those bits are mostly straight flute which is likely to give you a more shearing of the fibres at the top surface and less pulling out, as you already know a downcut will be mostly shearing the fibres at the top surface.
As your cut is only 1.5mm deep chip clearance is not really a problem, although presumably bottom finish is so a cutter with flat faces on the flutes is likely to do better, looks like these do.
I don’t think flute count is particularly important here, you’re not cutting plastic or metal and the cut is so shallow.
I’ve got a few of the Hozly 3.125mm single flute upcut and they’re surprisingly good for the price. At about $2 each in a multi pack they’re consumables.
There’s also Yonico which has an interesting range of pretty decent cutters like these Amazon.com which I’ve used and been happy with. (Avoid their dovetail cutters, the angle on the box is some sort of unfunny joke).
Have you tried using the flat back of a marking knife to cut the fuzzies down after the cut? It’s a quick and simple post-processing action for when the material and cutter conspire against you.
The usual cautions about sharp cutters, roughing & finishing passes and feedrates apply.