I think that's a term
best crypto friendly countries is very broad term, and it is not easy to say which country is best for crypto business. You have already mentioned some countries such as Malta or Japan, and they are for sure crypto friendly, but probably in some countries some things work better than in others. Apart from Malta, in EU Switzerland is also a good choice, but some other countries as Germany or Denmark may also be interesting for crypto investors.
I find a good link with a lot of good information regarding your questions, so you can start from there.
Crypto-friendly jurisdictions