OK, I'll try and give some guidance.
Start by filling out your profile. A lot will depend on where you live. We don't know if you are a retired movie star or a young fellow just out of high school.
Have you been making knives long? Have you ever made knives? If not, stop and think this out:
You don't become a brain surgeon by buying a scalpel and operating table.
You don't become a knifemaker by buying a lot of equipment.
If you haven't made at least 100 knives with whatever equipment you have, you don't want to start with an entire production shop.
What you are considering is a $30,000+ investment in tools to start with and another $10,000 to $20,000 before long. If you don't have the building available, that could run you anywhere from $20,000 to $100,000.
The list of equipment the fellows and I are giving you is just what it would take to start the business you want: There will be more as time goes by.
You don't need all this to start making knives as a hobby, but the answer to your question as-asked is:
A short list of main equipment:
2X72 variable speed (VFD) grinder with attachments - 12"-wheel, flat platen, small wheel fork, other size wheels, water cooled platen, Kool-mist system, work rests, jigs, etc.
9" variable speed disc grinder with multiple discs (Neilsen system is great)
HT oven - 18" minimum, 24" probably a better idea.
Tempering oven with accurate digital control.
Quench tanks and quenchants - 5-gallon capacity and oil in Parks #50 and Parks AAA
4X2X24" aluminum quench plates and some system for using them
Large variable speed drill press, smaller bench mount drill press. Carbide and regular bits. taps and other supplies
Small to medium size mill
Surface grinder
Metal cutting bandsaw and blades
Wood cutting bandsaw and carbide tipped blades
Lots of abrasives for the tolls as well as hand sanding
Vices, hand tools, hammers, micrometers, measuring tools
A small anvil (lots of stock removal tasks still involve a hammer and anvil)
Good quality Rockwell tester
Kydex oven, Kydex press, sheets of kydex, kydex rivets and installation tools, belt clips, etc.
LED lighting ... lots of it!
Large air compressor
Dust collection system, spark traps, air filters
PAPR and other PPE equipment
Knife sharpening supplies, stones, etc.
200 amps 220VAC electric supply, (3-phase would be a real plus)
A large, secure, dry building with air exhaust (and perhaps fire control systems required by local codes). 20X20 feet minimum, 20X40 more likely to work. Water supply to the building. A clean and air-conditioned room or office in the building is a real plus.
Knife steel. handle materials, handle supplies, guard and bolster material, pins, rivets, etc.
Acid etching tanks for damascus and patina. FC and other etchants.
Glues and resins, oils and coatings, shipping supplies and boxes, business cards and papers,
Don't forget - licenses and permits, zoning, fire inspections, Tax ID number, insurance, and other requires papers.
Add to that a retirement fund and health insurance.
Other things that will likely be needed eventually if you go full time:
Welding equipment
Plasma cutter
Other types and sizes of grinders. Multiple grinders save time and can be set up for specific tasks. many full-time shops run three or more 2X72 grinders.
Salt pots
Bigger and more ovens
Coating and other systems - Cerakote, Parkerizing, anodizing, etc.
