I consider anything with the Atari label on it, to be Atari.
Only action platformers lose in those later consoles really. Atari had a very shitty library on their last consoles. nothing memorable about it yet some of sega's best games where on those late released saturn and dreamcast games.
everyone wanted 3d games while sega sticked with 2d and 2.5 d games and weaksauce 3d games. that's their downfall. not to mention that the ps2 was allot cheaper than the dreamcast and more powerfull for the final nail in the coffin.
And the atari jaguar wasnt ancient and could make some nice 2d spirtes in say rayman to name one example wich was some way better than snes 2d. atari jaguar was trash from the very beginning it has no potential at all aside from the console specs. the developers for those consoles where just very mediocre so even if the console is good it would have changed very little.
The fifth gen of consoles is probably the most fascinating of all, and is seldom understood without digging into the backstory of the former insiders. There is a common misconception that SEGA or Atari "wanted" to stick with 2D based games. During the development period of the fifth gen consoles, almost nobody in the industry believed that 3D polygon based gaming was feasible for the upcoming hardware, except Sony. After parting ways with Nintendo, Ken Kutaragi of Sony was the sole person in the industry pushing for the development of a fully 3D ready machine. Everyone else was caught off guard by this until it was almost too late.
Companies like Commodor, Atari and 3DO released early on with hardware designed to expand upon the sprite based game design of the previous gen, and with the capability of crude 3D rendering as a novelty to mimic the early polygon arcade experiences of the time. Saturn and N64 were also not conceived to be 3D machines, either. SEGA notoriously made last second hardware revisions, adding in a second CPU to theoretically bring the Saturn up to snuff with the upcoming PlayStation, and the N64 development was facing longer development time tables as well. This was all in response to what Sony was about to blindside everyone with. The entire industry was thrust into learning the development of all new 3D game experiences basically overnight where they had thought this was still several years out. Nintendo sought council with Rare dev teams in Europe to learn 3D game development, while SEGA floundered to develop in-house and port their existing arcade games for Saturn, coupled with a panicked western launch they weren't expecting. All Sony had to do was sit back and collect licensing fees on their machine, because they didn't make games.
This is why Sony trounced everybody, and in retrospect it can look like everyone else was somehow stuck in the past, it wasn't the case. The PlayStation was simply ahead of it's time in many ways and was probably the most influential thing to hit the console market since the NES. If it weren't for Sony, we'd be looking back at the fifth gen of consoles as a mostly 2D sprite based library of games. Which, there's nothing wrong with that. A lot of people believe 3D games of the fifth gen were too crude and buggy and now haven't aged well because of that. We never really saw the full potential of what 2D games could have become back in the day, because 3D was the new law of the land by 1996.
Atari Jaguar wasn't trash from the start, it just missed the mark in a time of rapid change in the industry. Sony made it look a generation behind, when in fact it was better hardware than anything on the market in 1993 and was priced way better than the 3DO. I think the Jaguar had potential, but it was misdirected and would never be realized. Sure, it ended up becoming very insignificant in the end, but I don't necessarily blame Atari for it's failure. Sony made everyone look kinda bad that gen.