I don't know anything about these IG's, and maybe some or all of them are above board and have done nothing wrong.
HOWEVER, it first became apparent when Trump's phone call with the Australia Prime Minister was leaked the the press, back in the opening days of his adminstration, and has been abundantly clear since then - that there a number of holdover "non-political" appointees in the White House that have decided to use their "non-political" position-of-trust jobs as an opportunity to backstab the President.
Got a holdover job in the White House? Congratulations. Hate Trump? No problem, you're allowed. Planning on using your holdover job in the White House to make leaks to the press or otherwise backstab the elected President? Now we got a problem.
If you have have a holdover job in the White House but hate Trump, then quit your job and do something else. CNN needs volunteers, I hear. Using a position of trust to secretly backstab your elected President makes you a traitor. If you want to attack Trump, do it from outside the White House.
Ecclesiastes 10:2 - A wise man's heart directs him to the right, but a foolish man's heart directs him to the left.
Wise men don't need advice, and fools won't take it - Ben Franklin
"It's not how you start, it's how you finish."