Don't bother yourself about it. Bottleneck calculators are all full of s(supply your own word).
I play skyrim. On a i7-3770k and gtx970. Gets @ 180fps vanilla game. At 1080p/60Hz. No worries. Then I added 170 2k/4k/8k scripted mods, which are kind of hard on the cpu. End result being I get a solid 60fps. And that's all on the cpu. I can set a 4k DSR and still get 60fps. Ultra or low, 60fps. Definitely cpu bound and capped at 60fps. So where's the bottleneck.
Simple answer. The game. As is always the case. In CSGO I get a solid 300fps at Ultra settings. That a bottleneck? Not really. Is it a bottleneck because an i9 9900k is capable of more than 400fps? Not really. It's so far above the 60Hz refresh, even minimums, that it's moot. Does not matter.
Bottlenecks are BS. The cpu will put out 'X' amount of frames, the gpu either can put them on screen or not. Depending on the game, resolution or settings. In some games the gpu is strong enough for more, in some games its not.
The cpu can not hold back the gpu, the gpu can not hold back the cpu. They put out what they put out. It's the game that decides which gets fracked and which doesn't.
And bottleneck calculators don't play games on your pc with your settings. Someone decided what cpu is perfect for what gpu (or vice-versa) and any deviation from that becomes a bottleneck. Got nothing to do with any particular game or settings or resolution or OC or pc.
Oh, did you also happen to see the cpu/gpu recommended you purchase to alleviate the bottleneck? It'll be at the bottom, in a sales pitch by at least one of the companies who invested in the calculator website.