Have you considered a column with a sort order number in it? However, I'm not clear that this will even resolve your issue. Because you might not want to display the sort value. I'm not clear that DSS's Graphics can sort by an undisplayed value.
You could export to something like Tableau, or even MS Excel
You could display with the ggplot2 library from the R Language
Note: Seting Up R can be a bit of a big lift getting it to work with DSS, then learning how to use it in either a notebook or as a Shiny App, which would allow for interactive graphics.