My personal lens preferences: I typically use a focal length of anywhere between 14 to 300mm, depending on what I'm shooting. I'm talking about the focal length for a "full frame" 35mm sensor (for a "crop" sensor or medium format sensor these numbers would not be the same). I hesitate to make too many generalizations, because there are always exceptions, but I'll make some anyway:

Zooms vs prime lenses:
A zoom lens has a focal length range, e.g. 24-105mm, whereas a prime lens is just a single (i.e. fixed) focal length (e.g. 50mm).
Zoom advantages:

Zoom disadvantages:

My preferred lenses

First I will speak generically about lenses designed for a "full frame" 35mm sensor - independent of any particular brand.

Single lens: If I can only carry one lens around I'll generally go for f/2.8 24-70 or f/4 24-105 zoom. I might prefer a f/4 15-35 zoom if I'm doing landscape. I might prefer a large-aperture prime (e.g. f/1.8 50mm) if I'm going into a low-light situation, or doing strictly portraits. Obviously I might prefer a macro lens (e.g. f/2.8 100mm) if I'm doing strictly macro work.

If possible, what I really like is to carry around two cameras, each with a different lens. For example a 15-35mm f/4 zoom and a 85mm f/2. I tend to not be interested in having a wide aperture with wide angle lenses (because I want most of the frame in focus) but find I'm more likely to want a wide aperture with a portrait (85mm) lens or other telephoto lens because I'm more interested in a nice background blur with these longer shots. (This is a personal preference of mine - I've never heard anybody else say the same thing.) I might also carry around a third lens in a bag for possible lens change, but I don't like to change lenses a great deal. A great stratgey can be to shoot with a friend and have each person carry different lenses so you can swap and no single person has to carry a lot.

Next, I will focus (no pun intended) on lenses from two popular brands - Canon and Nikon.
- And I will focus just on their newer lens selection for their newer mirrorless full frame cameras.
(They have many older lenses for their D-SLR cameras but I expect these cameras will eventually be phased out.)

Canon's RF lenses and the ones I might actually buy (if I had the money)

Also see: Canon website

focal (mm) f-stop, etc weight filter price year comment
Zooms:
10-24 4 L USM ? ? ? coming eventually I would expect to like/love this lens although I'd probably use a 15-35 more often
15-35 2.8 L IS USM 840g (1.85 lb) 82mm $2,300 2019 I would prefer a lighter and less epensive f/4 version
15-35 4 L IS USM ? ? ? coming eventually I would expect to like/love this lens
24-70 2.8 L IS USM 900g (1.98 lb) 82mm $2,300 2019 I would prefer a lighter and less epensive f/4 version
24-70 4 L IS USM ? ? ? coming eventually I would expect to like/love this lens
24-105 4 L IS USM 700g (1.54 lb) 77mm $1100 2018 a great general purpose lens
24-105 4-7.1 IS STM 395g (0.87 lb) 67mm $400 2020 a good general purpose lens, the one above is a better quality lens (but more expensive)
24-240 4-6.3 IS USM 751g (1.65 lb) 72mm $900 2019 generally 10x zooms sacrifice some quality, but some people might love this lens
28-70 2 USM 1430g (3.15 lb) 95mm $3000 2018 unusually wide aperture for a zoom lens, therefore heavy and expensive
70-200 2.8 L IS USM 1070g (2.36 lb) 77mm $2700 2019 I would prefer a lighter and less epensive f/4 version, but many professionals will buy this lens
70-200 4 L IS USM 695g (1.5 lb) 77mm $1600 2021 I would expect to like/love this lens
100-500 4.5-7.1 L IS USM 1365g (3.0 lb) 77mm $2700 2020 I would expect to like, but heavy and expensive
Primes:
35 1.8 IS STM Macro 305g (0.67 lb) 52mm $500 2018 I would prefer a 15-35 zoom, or 85 or 100 for macro work, note this is only 1:2 macro (not 1:1)
50 1.2 L USM 905g (2.09 lb) 77mm $2300 2018 I would prefer a lighter and less expensive f/1.4 or f/1.8 version
50 1.8 STM 160g (5.6 oz) 43mm $200 2020 I would expect to like this lens but might prefer a slightly better quality f/1.4 L version
85 2 IS STM Macro 500g (1.1 lb) 67mm $600 2020 I would expect to like/love this lens, note this is only 1:2 macro (not 1:1)
85 1.2 L USM 1195g (2.63 lb) 82mm $2700 2019 I would prefer a lighter and less expensive f.1.4 or f/1.8 version
85 1.2 L USM DS 1195g (2.63 lb) 82mm $3000 2019 DS stands for Defocus smoothing technology which is a new lens coating
105 Macro 2.8 L USM ? ? ? coming eventually I would expect to like/love this lens, this expected to be a 1:1 macro
135 2 L USM ? ? ? coming eventually I would expect to like/love this lens
600 11 IS STM 930g (2.05 lb) 82mm $700 2020 I don't personally desire such a long lens
800 11 IS STM 1260g (2.77 lb) 95mm $900 2020 I don't personally desire such a long lens

Nikon's Z lenses and the ones I might actually buy (if I had the money)

Also see: Nikon website

focal (mm) f-stop, etc weight filter price year comment
Zooms:
14-24 2.8 S 650 (1.43 lb) 112mm $2400 2020 I would prefer the less expensive f/4 just below, but looks good (and not that heavy)
14-30 4 S 485g (1.1 lb) 82mm $1300 2019 I expect I would love this lens
24-50 4-6.3 195g (0.43 lb) 52mm $400 2020 I expect I would like this lens but would probably prefer the 24-70 f/4 S
24-70 2.8 S 805g (1.77 lb) 82mm $2300 2019 I expect I would like this lens but generally prefer the lighter and less expensive f/4 version
24-70 4 S 500g (1.1 lb) 72mm $1000 2018 I expect I would love this lens
24-105 4 S ? ? ? coming 2021 I expect I would like this lens
24-200 4-6.3 570g (1.25 lb) 67mm $900 2020 generally 8x zooms sacrifice some quality, but some people might love this lens
70-200 2.8 S 1360g (2.99 lb) 77mm $2600 2020 I expect I would like this lens but generally prefer the lighter and less expensive f/4 version
70-200 4 S ? ? ? coming 2022 I expect I would like this lens
100-400 ? S ? ? ? coming 2021
Primes:
20 1.8 S 505g (1.11 lb) 77mm $1050 2020 I'd buy the 14-30 f/4 instead
24 1.8 S 450g (0.99 lb) 72mm $1000 2019 I'd buy the 14-30 f/4 instead
35 1.8 S 370g (0.82 lb) 62mm $850 2018
50 1.8 S 415g (0.91 lb) 62mm $600 2018 I expect I would like/love this lens
50 1.2 S 1090g (2.4 lb) 82mm $2100 2020 I'd prefer the lighter and less expensive f/1.8 version
58 0.95 S 2000g (4.4 lb) 82mm $8000 2019 too heavy and expensive
60 Macro coming 2020/2021 ? ? ? ? I expect I would prefer the 105 Macro
85 1.8 S 470g (1.03 lb) 67mm $800 2019 I expect I would like/love this lens
105 Macro ? ? ? ? coming 2021 I expect I would like/love this lens
135 ? ? ? ? coming 2022 I expect I would like/love this lens