Worn by officers of the New Republic Navy (like General Hera Syndulla and Captain Carson Teva), this greeble appears to be some sort of communication device.
My version is based around screenshots from the series posted by Wonkybonkers and division 6 on the RPF (https://www.therpf.com/forums/threads/help-finding-parts-for-badge-ahsoka-series.356246/#post-5513473). The original prop appears to use some form of LED lens but I couldn't match the one used on the prop readily.
However, I DID have a lens from an LED fixture in stock that's close and looks pretty good in its place. The lens I used is from a cheap LED indicator lamp readily available on AliExpress and Temu: https://share.temu.com/odasD24V1cA
The hole is pre-supported, but the V-cut notch allows for easy break away of the support and insertion of the LED housing. With some ingenuity, you could even make this prop light up - though we haven't seen that in universe yet.
The author marked this model as their own original creation.