Welcome to the forums @hoffman 
I don’t have any Rock Pi, but looking on their webpage: Rock4/hardware - Radxa Wiki - it looks like the Rock Pi 4 B and the Rock 4 SE use different CPUs. Same family, but other revision - and sadly a completely different beast with about 4 years of development time between them: The 3399 is (I think) a dual core CPU, while the -T is a hexcore:
RK3399 datasheet - The SoC of ROCK 4A/B/C
RK3399-T datasheet - The SoC of ROCK 4 SE(2022) and ROCK 4C Plus(2022)
Most importantly, the Rock 4 SE has no BSP / support from the manufacturer for Yocto ( Yocto-layer-for-radxa-boards - Radxa Wiki ) - meaning it will not be possible to integrate it for a working balenaOS as long as no one writes that compability layer. So for the time being, there will be no easy way to integrate it - or even get it booting at all I fear. Sorry!