I purchased the exact controller linked to from the Home Assistant Flux LED documentation page (https://www.home-assistant.io/integrations/flux_led/ which links to https://www.amazon.com/dp/B01JZ2SI6Q/ref=cm_sw_em_r_mt_dp_GCJ0YJFCPCJKJZQE70ES) and it does not work in Home Assistant. It has the same interface as the “newer” interface I posted above in the Magic Home app. I can turn it on or off, but nothing else (no brightness, color, etc).
I did crack it open and this one has the ZJ-WFMN-A V1 board, which I believe means I can flash it with ESPHome based on this thread (Magichome devices work PERFECT with homeassistant (reflash this code with ESPHOME)). Unfortunately my other 4 have ZJ-WFMN-E VL1 boards, which my understanding is they have a different chip and cannot be flashed, and therefor are essentially useless for any kind of Home Assistant integration.
All of this is making it very frustrating and difficult to try to get LED strips integrated into HA. I have no idea what/where to buy to get a controller that will work out of the box, versus one I have to flash, versus one that will just not work at all.