I dont know if this is what you mean but as far as my interpretation of it, as follows (might be a "my location" thing
Nurses: Most girls I know are nurses for some reason. They all post the same stuff constantly about how important they are and how hard they work. 80% of them constantly post during work hours on fb and snapchat.
Volunteer Firefighters: nobody wants recognized as badly as a volunteer firefighter.
Farmers: I am a farmer. All my friends constantly e-brag about working 80-100 hours a week farming. If you are working that many hours during non harvest you are doing something wrong or in my friends case, you just dont want to be at home with your wife.
Worst of all.... Teachers: If I ever find a teacher that doesnt desperately crave attention and acknowledgement it will be the first. I feel like this is more prevalent in new to the profession teachers. Teachers think they have the hardest jobs ever. They should all have to spend their summers digging ditches.
honorable mention: linemen and windmill workers. All of the above jobs are important, people just want to be more important than they really are
Each of the professions listed is underpaid. (Edit: Well, farmers... not so much... lately. But it's cyclical!) They deserve all the recognition they can get.