u/Any-Process-2321

Just looking for some advice on the best types of pencils to go over alcohol markers to create soft highlights and shadows?

I’ve got the Ohuhu 321 (01) fine tip set and want to try out some brush tips. I was wondering if any of the other smaller sets add to this colour selection as i’d rather get new colour options to try the brush tips than double up? Is there any small/ medium sets that are separate to the 321 colour wise?