(Please don't double-post... I deleted your newer, duplicate.)
There are so few add-on developers, that if you haven't received a response, you probably won't. The cost of developing an accessory-like add-on for columns would be reasonably high...
One of the forum moderators
AC 26 USA and earlier • macOS Ventura 13.4, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB