I'll offer a few examples based on my personal experience through interacted with them. And I don't mean to stereotype any of NF types. Here it goes:
I noticed one of the common trait from ENFP males are they happened to exhibit their masculinity through being 'overtly' fighty. Typically the choice of languages that they use. Perhaps that's why they tend to enjoy having verbal fights and somewhat got carried over easily.
INFJ males are too supportive and emotional to a point that immediately it strikes as a BFF material. They're so giving and have a very protective nature to friends and it seems very difficult for them to talk 'loudly' with zest as most of the time I felt they're too soft-spoken.
ENJF males are as outgoing as ENFP males. The only difference I found is that ENFPs tend to be comfortable at taking risk by making the first move; whereas ENFJs male prefer to drop hints or play a little hard to catch. I also find them to be a bit quite chatty, though the good thing is that they are able to focus on you or a certain topic without a sudden change of topics. And they're good listeners.
I have yet to meet an INFP male, so I don't have any comment about them.
However, I found all of the above NF type males are very intouch with sensitivity. For example, I've heard openly from a few ENFPs that they had cried over watching a certain movies of books. It seems they're quite comfortable to express their sensitive emotions. INFJs do this as well, but usually during private conversations.
They all seem not to be hyper-sensitive in criticism to a point that you can tell from their facial expressions. I also know quite a few ENFPs didn't take it lightly when people criticize their style of clothes or the way they talk (goofiness, especially).
So my question to NF male here is that, how do you work on masculinity? Do you find yourself accepting easily or constantly trying to struggle with this?