I made this texture pack to get the hybrids I added earlier to get their look naturally in the game.

For goatolotl, we need to breed 2 goats in the ocean biome

For axolgoat, you need to breed 2 axolotl in mountain biomes

Do not put axolgoats in buckets, this will cause their appearance to deteriorate.

Finally, you must install optifine to experience this, because such natural-looking commands are written with the codes that optifine supports.