The biome Registry Analysis, unlike the dimension one, does not contain a list of all taken biome IDs. Is that intentional? Is there any alternative for checking biome ID conflicts?
Thank you!

I am not planning to do any more feature updates for 1.12, and in newer versions we have unlimited ids and Forge's registry dumper so this feature is no longer needed.

Thanks for reaching out. The biome profiler is just a standard Forge registry profiler such as item/block which is why it does not include the numeric ID info. I will mark your issue as a feature enhancement. I think instead of listing IDs I will just document duplicate IDs for potions and biomes in the error file.

That does sound good as Anti Id Conflict has not been updated for 1.12.2. I did use TellMe to find out the IDs.