Question about prayer beads

Genuine question. If someone used plain plastic/wooden prayer beads for dhikr where every bead had names like “Michael Jordan” or “Tommy Hilfiger” written on it in tiny text and barely noticeable (no pictures or images, just the name), would that be impermissible or permissible in Islam? Assuming the beads are only being used to count dhikr, and no significance is being attached to the name itself.

What would be the reasoning behind the ruling? Thanks!