If you're really, really motivated, you can make facially-plausible arguments against any of the four factors. (Coinbase does this, for example).
Common enterprise and expectation of profit are the two factors that are the weakest, and for a pure cryptocurrency like Bitcoin or Ethereum, there's probably not enough to meet common enterprise there. Although by the time you get to staking--especially an exchange offering to stake on your behalf--you'd probably pass the threshold of common enterprise, and you should assume your service meets the Howey test.
Importantly, you don't have to convince yourself that you don't meet the Howey test. At the end of the day, if it comes to it, you have to convince a judge while they are being also courted by an adversarial party.
It doesn't matter what your company's interpretation is if a judge says "nah dog that isn't right".
What matters is whether you genuinely believe your interpretation is reasonable
I don't think any of these crypto companies have ever believed they could convince a judge, hence all the hemming and hawing in the public sphere in an attempt to build pressure against the SEC to either give them an out by making a very specific statement that they can work around, or by getting an administration to push the SEC to ignore all the bad stuff in crypto land.
Common enterprise and expectation of profit are the two factors that are the weakest, and for a pure cryptocurrency like Bitcoin or Ethereum, there's probably not enough to meet common enterprise there. Although by the time you get to staking--especially an exchange offering to stake on your behalf--you'd probably pass the threshold of common enterprise, and you should assume your service meets the Howey test.