It is proposed that all related skills will receive an exp modifier of 2x until its value is half as the highest skill of the group obtained by said dwarf. The '~' indicate things I'm uncertain of and they may be repeated. The skills are grouped into relative skills, this to represent the fact that many skills require similar, interchangeable skill sets. Some overlap. Groups with multiple columns indicate where I think those groups might be split. Anything in () is the modification of a skill as it is presented in the original post. '-' indicate skills that might be combined, as is proposed in the first post.
Woodworking:
Bowyer
carpenter
woodcrafter
~Building designer
/*all use wood carving or constructing*/
Stone working:
mason
engraver
stone crafter
~Mining
Knapper
~Building designer
/*these include stone carving or constructing, I included mining because it involves exploiting weakness or following the "grain" of the stone, which I imagine would be useful in masonry.*/
Construction
Building designing
Carpentry
Masonry
/*all involve construction*/
Doctor
Bone doctor
Diagnostician
Surgeon
Suturer
Wound dresser
/*some of these are rather loosely connected, but I think a big part of being a doctor is a) some knowledge of anatomy and b) working under stress or with gore, blood etc. which are a part of all these tasks/skills*/
Engineer
Mechanic
~Pump operator
-Siege engineer
-Siege operator
/*all these involve working with or building mechanisms*/
Ranger/animalworking
Animal caretaker Ambusher
Animal trainer Fisherdwarf
Trapper
Beekeeper
Shearer
Milker
(Animal Processing - Milking, cheese making, shearing, spinning, -beekeeping)
/*all these task require a knowledge of animal behaviour*/
chemistry like stuff
Tanner
Soaper
Alchemist
Potash maker
Lye maker
Dyer
(Wood Burning - Includes Wood burning, potash making, and lye making)
~Brewer
/*all these professions deal with some form of chemistry, I'm no expert in these areas so I imagine this will need some work.*/
plant processer
miller
thresher
presser
~cheese maker
~cook
/*tasks that process plants*/
growing
grower
herbalist
/*Everything the herbalist finds in farmable, a farmer would probably recognize what he grows, and both would know where/what sort of environment different plants grow in*/
meat processing
fish cleaner
-fish dissector
Butcher
-Animal dissector
~bone carver
Metalsmith
Armorsmith
Furnace operator
Metal crafter
Metalsmith
Weaponsmith
/*all require knowledge of metallurgy and how to operate a furnace*/
Jeweler
Gem cutter
Gem setter
Strand extractor
/*gem stuff, precision, cutting and the like.*/
Textile worker
spinning clothier
weaving leather worker
~dyeing
/*sewing and cloth making. This might be split as the columns indicate*/
Admin.
organize
book keeper
appraiser
Broker
Comedian
Conversationalist
Flatterer
Intimidator
Judge of intent
Liar
Negotiator
Persuader
mêlée skills
Fighter
Ranged attacks
Archer
Social
Concentration
Consoler
Leader
Observer
Pacifier
Student
Teacher
Broker
Comedian
Conversationalist
Flatterer
Intimidator
Judge of intent
Liar
Negotiator
Persuader
Crafting
Bone carving
Glassmaking
Stone crafting
Wood crafting
pottery
/*the materials are very different as is the construction, but all these tasks create very similar items*/
Wood cutting, glazing and wax working cutting leave me at a loss.
List of current skills:
http://df.magmawiki.com/index.php/Skills