For a BIP-44 wallet, the xpub at m/44'/0'/0' makes a lot more sense than at m/44'/0'/0'/0. The former can be used to find out the total amount of funds in Account 0, and therefore is usable as a watch-only key to monitor an HD account without risking the private keys. And it can still generate incoming addresses in the external chain at 0/1, 0/2, 0/3 etc. relative to the xpub.
m/44'/0'/0'/0 does technically offer a bit more privacy by hiding the internal (change) chain. Still, whoever has it can see all external incoming transactions into the account and track them on the blockchain. That's really not that much more private than m/44'/0'/0'. I suppose xpubs are not really meant to be made public; it's the addresses on the external chain that are. And they are the same regardless of the xpub they are derived from (as long as correct derivation sub-paths are used).
What I didn't/don't understand is if 4 fields are the protocol (m/44'/0'/0'/0), then why does (m/44'/0'/0') even work. What is being used as a default in which position? Sorry, I just need to read more.
Sites:
The site you mentioned (which you call sites in plural, even though they are identical) looks to me more like an engineering toolkit than a consumer product.
I mentioned any BIP39 sites, but listed two (although a copy). If you use google, you will find many sites and github tools to match the results. Since it is a protocol, it wouldn't matter which I pick. To save space, I decided not to make this a thread about a list of sites or tools. This thread is about keys, not about sites which convert wordlists. Basically, the SITE matches the keys that the iOS version outputs and the Android version doesn't. I CAN'T match a wordlist to the keys that the Android version outputs. So, any person trying to figure out if there wordlist backup is correct or not simply can't match keys output on the Android.
Also,
Oh, and your spelling of Mycelium is wrong in most instances. Celium is not a word.
My wife does that. She will take an entire conversation and, just to make a point, will try to nitpick anything. I don't think spelling, or rather the case of a letter, changes the topic of a thread. If I were to nitpick back, I would say that your determination of 'wrong in most instances' is wrong in that I used the capital letter C only 3 times out of the 11 times I had typed it in.
Thanks for your input.