Okay, I've been playing around with this mod and I noticed a few things I thought I'd share.
creature_accelerated has a few errors that cause some unsightly display issues. Mainly my gripe is that when you left the generic [CREATURE:ANIMAL] unnamed as [NAME:::] this causes meat products to show up with gaps in their names.
Changing this to [NAME:animal:animals:animal] gives this:
Looks much better in my opinion. Now, to avoid everything showing up as "animal leather item" you can add the [PREFIX:NONE] tag after each material template definition in the creature raw. This will keep the plain "leather item" style for all the derived products, from milk to silk to hoof etc. Adding the [YARN] tag to the [MATERIAL_TEMPLATE:HAIR_TEMPLATE] entry in material_template_default and leaving it unmodified, but changing the creature_accelerated [USE_MATERIAL_TEMPLATE:HAIR:HAIR_TEMPLATE] to use wool makes the appearance far more clean.
Here's my full modified creature_accelerated raw for reference:
creature_accelerated
[OBJECT:CREATURE]
//standardized animal materials
[CREATURE:ANIMAL]
[NAME:animal:animals:animal]
[BODY:QUADRUPED_HOOF:TAIL:2EYES:2EARS:NOSE:2LUNGS:HEART:GUTS:ORGANS:THROAT:NECK:SPINE:BRAIN:SKULL:2HEAD_HORN:MOUTH:TONGUE:GENERIC_TEETH:RIBCAGE]
[NATURAL]
[BODY_DETAIL_PLAN:STANDARD_MATERIALS]
[USE_MATERIAL_TEMPLATE:HOOF:HOOF_TEMPLATE]
[USE_MATERIAL_TEMPLATE:HORN:HORN_TEMPLATE]
[BODY_DETAIL_PLAN:STANDARD_TISSUES]
[SELECT_TISSUE:HAIR]
[INSULATION:200]
[USE_TISSUE_TEMPLATE:HOOF:HOOF_TEMPLATE]
[USE_TISSUE_TEMPLATE:HORN:HORN_TEMPLATE]
[BODY_DETAIL_PLAN:VERTEBRATE_TISSUE_LAYERS:SKIN:FAT:MUSCLE:BONE:CARTILAGE]
[BODY_DETAIL_PLAN:BODY_HAIR_TISSUE_LAYERS:HAIR]
[SELECT_TISSUE_LAYER:HEART:BY_CATEGORY:HEART]
[PLUS_TISSUE_LAYER:SKIN:BY_CATEGORY:THROAT]
[TL_MAJOR_ARTERIES]
[USE_MATERIAL_TEMPLATE:SKIN:SKIN_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:CHITIN:CHITIN_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:SCALE:SCALE_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:LEATHER:LEATHER_TEMPLATE]
[SELECT_MATERIAL:LEATHER]
[MULTIPLY_VALUE:2]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:PEARL:PEARL_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:TOOTH:TOOTH_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:SHELL:SHELL_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:HORN:HORN_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:HOOF:HOOF_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:BLOOD:BLOOD_TEMPLATE]
[STATE_NAME:LIQUID:blood]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:PUS:PUS_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:ICHOR:ICHOR_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:SILK:SILK_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:SPONGE:SPONGE_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:SINEW:SINEW_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:BONE:BONE_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:FAT:FAT_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:TALLOW:TALLOW_TEMPLATE]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:HAIR:HAIR_TEMPLATE]
[STATE_NAME:ALL_SOLID:wool]
[STATE_ADJ:ALL_SOLID:wool]
[STATE_NAME:LIQUID:wool]
[STATE_ADJ:LIQUID:wool]
[STATE_NAME:GAS:wool]
[STATE_ADJ:GAS:wool]
[YARN]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:MILK:MILK_TEMPLATE]
[STATE_NAME:ALL_SOLID:frozen milk]
[STATE_ADJ:ALL_SOLID:frozen milk]
[STATE_NAME:LIQUID:milk]
[STATE_ADJ:LIQUID:milk]
[STATE_NAME:GAS:boiling milk]
[STATE_ADJ:GAS:boiling milk]
[PREFIX:NONE]
[MILKABLE:CREATURE_MAT:ANIMAL:MILK:20000]
[USE_MATERIAL_TEMPLATE:CHEESE:CREATURE_CHEESE_TEMPLATE]
[STATE_NAME:SOLID:cheese]
[STATE_ADJ:SOLID:cheese]
[STATE_NAME:SOLID_POWDER:cheese powder]
[STATE_ADJ:SOLID_POWDER:cheese powder]
[STATE_NAME:LIQUID:melted cheese]
[STATE_ADJ:LIQUID:melted cheese]
[STATE_NAME:GAS:boiling cheese]
[STATE_ADJ:GAS:boiling cheese]
[PREFIX:NONE]
[USE_MATERIAL_TEMPLATE:SOAP:SOAP_TEMPLATE]
[STATE_NAME_ADJ:ALL_SOLID:soap]
[STATE_NAME_ADJ:LIQUID:melted soap]
[STATE_NAME_ADJ:GAS:boiling soap]
[PREFIX:NONE]
[MATERIAL_VALUE:5]
[USE_MATERIAL_TEMPLATE:OIL:CREATURE_EXTRACT_TEMPLATE]
[STATE_NAME:ALL_SOLID:frozen oil]
[STATE_NAME_ADJ:ALL_SOLID:frozen oil]
[STATE_NAME:LIQUID:oil]
[STATE_NAME_ADJ:LIQUID:oil]
[STATE_NAME:GAS:oil]
[STATE_NAME_ADJ:GAS:oil]
[STATE_COLOR:ALL:BLACK]
[MELTING_POINT:9870]
[BOILING_POINT:19930]
[PREFIX:NONE]
[ARENA_RESTRICTED]
[DOES_NOT_EXIST]
Footnote: The wiki states that [PREFIX:NONE] is not permitted in material template definitions
[source], yet I've used it successfully here, so I guess the wiki's wrong on this one. Perhaps it means you just can't use it in material_template_default. It's a shame, because if you could it would let you create generic animal bones, skulls etc.