Don't assume they will like shounen the most... just because it is the most popular...
Suggest some variety. I recommend InuYasha over Naruto. Some other good ones for a new anime fan would be like Little Witch Academia, Toradora, Miss Kobayashi's Dragon Maid, and Cells at Work. Of course stuff like BNHA, Mob Psycho 100, and Saiki K are also good. One Punch Man might be a bit too meta for a new anime viewer.
Lastly, @Dogs1998 and @Jetbug2003 you're basically hijacking this thread.