I don’t need you to prove anything to me, it’s not a big deal for me but I suggest writing what you actually have done with your builds so that we don’t have to trust your guesstimation. Just look at other build threads or YT channels - players, even well-known on the forum, put a lot of effort into testing their builds thoroughly, make many videos and fight all Celestials if they advertise that. Also it’s good to have those videos because you can see for example how much kiting / skillful gameplay is required (i.e. dancing with Ravager vs just facetanking).
We regularly see players asking for builds that can clear all the content. I think it’s reasonable to only recommend those for which it was actually done.
Personally if I only played my character in Crucible (which I used to do) then I only wrote Crucible in the title. If I didn’t have time / will / skill to push highest SR then I only wrote SR75. If I only had patience for Ravager then I only put him in the title.
I’m not experienced enough to tell a precise Celestials hierarchy (I doubt you could make one) but Ravager, Crate and Callagadra are definitely the stronger ones and Clones, Lokarr and Mogdrogen are the weaker ones and can be skipped I think if the former three are beaten.
It depends. I had immortal characters in Crucible that I don’t think would ever be able to kill the hardest Celestials. There’s an anti-Crucible sentiment in some part of the community, I don’t think they feel Crucible is a proper measuring stick for a build’s strength.
But I see in your video that you beat Crucible without any Blessings. It’s definitely an achievement and a sign the build is strong. There’s even a special category for something similar in GrimSheet: Endgame Build Table - ETE edition [v1.41] called “Naked CR”.
I’m personally not experienced with it. Perhaps it transfers well to Celestials.
Potions vs Celestials are totally fine and widely used and I think you can use all of them. Even adjusting builds for a particular Celestial (the most common and easiest being adjusting your augments for overcaps) is common with changes that are more or less practical to make.