The 70-200 is one of my go-to lenses. I carry it and use it for a very high proportion of my photos - everything from sports and equestrian to portraits and landscapes. I use it a high proportion of the time with a fast aperture and a shallow DOF.
Because the 70-200 is so important, I've never bought the 80-400 or 100-400 lenses. The 70-200 has priority over that range, and for longer focal lengths I have options. Currently my most used long lenses are 70-200, 400mm f/4.5, and 800mm PF f/6.3. I carried all three of them with me this past Sunday photographing Petit Le Mans at Road Atlanta - and used them all. For wildlife my use cases are quite clear - 800mm or 400mm - with the 70-200 for environmental wildlife images or landscapes. Invariably the 80-400 or 100-400 lenses have had slower apertures than I wanted, which impacts backgrounds and noise.
For me the one compelling case for a 100-400 or 80-400 is with the very short minimum focus distance in support of insect and flower close ups. Secondarily I could use these lenses for travel when space and weight is limited, but there are some other alternatives.
The 180-600, 200-600 or 200-500 focal lengths are a better fit for me in a kit with a 70-200. I tried a 200-500 very early, ultimately bought it to replace a Tamron 200-500 for my wife, and then borrowed the 200-500 on more than one occasion. I liked the relatively light weight compared to a 600mm f/4 or 500mm f/4, and liked the flexibility of a zoom. I chose the 200-500 over the 150-600 options as well as the 180-600 because it had a constant f/5.6 aperture - something I find useful since I shoot with manual exposure. If I used Auto ISO primarily, it might be a different call. Even with a 500mm PF available, I often chose the flexibility of the zoom. But now, having light weight 400mm and 800 primes, I have sold the 200-500 and not replaced it. The 600mm f/4 is a different beast - requiring a tripod with gimbal and reducing mobility - but with an edge in image quality. I have my 600mm f/4, but it has special use cases - and is worth more to me than the current market value if I sold it.
I would take a hard look at your kit and reduce overlaps. It's better to have gaps than overlaps and unused gear. But also think about what you shoot, how you shoot, and what is important to you. You might have a couple of kits that are filled with your lenses, or specific situations and subject matter that calls for one lens above others.