This is how I display my Maths groups.
Its very visual for those students who tend to forget which group they are in.
I simply print and laminate students names and blutac them onto the appropriate group.
I find it works best when printed on A3 as students names can be readable from a reasonable distance.
Fonts are by: https://www.teacherspayteachers.com/Product/Commercial-Font-License-All-Hello-Fonts-for-One-User-Lifetime-License-395172
I would completely recommend buying this font licence!