Hey JuicySpices,
thanks for reporting this bug!
I tested this on my local singleplayer and can confirm this report.
When breeding 2 Alolan Darumakas I got an offspring which was Alolan, whereas when breeding 2 Alolan Darmanitans the offspring was a normal Darumaka.
I can not confirm the /breed bug , the default command (Pixelmon-Mod-Command) worked just fine, but also only produced a non-Alolan egg.
Altough this sounded similar to the already known "Alolan Breed Bug" at first (
https://pixelmonmod.com/tracker.php?p=2&t=15838) , I'm pretty sure this is something different, hence why I'm not going to mark this report as "Duplicate".
Marked as "Awaiting move to internal"!
Sincerely, NotKili