I want to see your list of 35 different roles.
OK, I lied about how many roles.
1. Inexpensive casual marksmanship training plinking rifle (Appleseed gun)
2. Camping/take-down rifle (easy to pack for road trips, single shot OK)
3. Kit gun (small handgun for hiking, fishing, etc)
4. Small/private range target rifle (peep sights, bolt action, accurate, able to feed super colibri or the like for quiet shooting)
5. Moderate price-per-round mid to long range practice rifle (.223, bull barrel, or similar with scope)
6. Mid to long range iron sights, recoil management, sling technique, etc. practice rifle (Centerfire high power target rifle - iron sights)
7. Longer ranges, bipod/field support techniques practice (Centerfire high power target rifle - scoped)
8. Non-NFA substitute for detachable stock for pistol (sub2K w/ common magazines)
9. Magnum pistol caliber brush/field gun (.454 casull lever gun)
10. sub-caliber varmint gun (e.g. .17 A. Hornet)
11. Intermediate bore flat shooting "plains" hunting gun (6.5, .270, 7mm mag, etc., longer barrel)
12. General large game rifle (7mm mag, 30-06, etc., shorter barrel)
14. Intermediate power home defense/coyote rifle (M4gery)
15. High power semi-auto, lookin' at self in mirror (m1a, FAL, or equivalent)
16. Practical/modern black powder hunting rifle (saboted .45)
17. Traditional/reproduction muzzle loader for historical interest (e.g. revolving cap&ball carbine, flintlock)
18. Service/HD pistol, full capacity (CZ75, Glock, etc)
19. Concealed carry pistol (short grip frame/slim)
20. BUG handgun (j-frame or similar)
21. Historical/military issue sidearm for interesting newish shooters, and because I like old stuff (tokarev, Nagant revolver, vintage 1911, Luger, Webley, etc.)
22. Historical/military issue longarm for interesting newish shooters, and because I like old stuff (Springfield, Mosin, M1, Mauser, K-31, etc.)
23. Magnum handgun, Hunting (S&W M29 6")
24. Magnum handgun, "predator defense" (Ruger Alaskan .454)
25. Bowling pin handgun (.45 single action revolver)
26. Dressy show-off handgun (lightly customized 1911)
27. Trunk Shotgun (H&R 20ga single shot)
28. Upland shotgun (Beretta AL391 20ga)
29. Home defense shotgun (Mossberg 500, 18" barrel)
30. Waterfowling shotgun (Browning A5)
31. Traditional early pistol (single shot flintlock) for education, making smoke, lookin at
32. Cap and ball "cowboy" gun making smoke and friends - plinking and plates (1860)
33. Cap and ball target gun - anachronistic marksmanship training (Ruger Old Army)
34. Cap and ball pocket gun (1862, 1863) - smoke producing range toy
35. Short LOP .22 for children
36. Short LOP shotgun (20, .410) for smaller shooters/children
37. Glove box gun (stainless steel, inexpensive)
39. Muzzle loading shotgun for figuring out muzzle loading shotguns.
Target vs. hunting guns may be chambered for the same round, but a target gun will tend to be heavier, have a different trigger, lack provisions for a sling, etc.
Obviously some of the roles beg to have more than one gun. E.g. military sidearms... it is just a lot more fun if you have Luger, Walther, 1911, 1917, Tokarev, Nagant, Webley, and so on, than just having one.
I am not even counting silencer hosts and the like, which I never got into.