The order of the brush presets in the brush presets docker is alphabetical by the full name of the brush preset. The only way to change the order would be to make your own personally named presets with a suitable custom tag on them.
In the popup palette, they are also arranged in alphabetical order provided the palette has enough spaces to accomodate all the presets in the tag that has been selected for display in the palette.
If it doesn’t then they are arranged alphabetically but some are dropped from presentation. I don’t know how it’s decided which ones to drop.
If you’ve set your palette to show only 10 presets, you need to create some tags with a maximum of 10 presets assigned to them.
You could try increasing the number of palette preset slots to 15 and get used to the smaller icons?