Strictly speaking, every thing (digital or physical) can function as store of value, the difference between the store of values is how effective they are doing and what you want them to do.

Bitcoin is obviously one of the best options long term speaking within the world of crypto, but even Dogecoin has done quite a job functioning as store of value in the past.

I actually like Dogecoin too with how friendly the community is, plus the fact that Dogecoin throughout the years has been the second most used coin after Bitcoin when it comes to micro transactions.