Ok. I just ask that if it is bad news that you not shoot the messenger. Shooting the messenger is either leaving a negative rating (usually reserved for rude or unprofessional experts) or not leaving a positive rating at all.
At the very least, once your I-485 is approved, their A-2 status will terminate if it is dependent upon you. They can try for an H-1B professional visa, but it might be too late for that at this time. The information on the H-1B is basically that they must each have a job offer, the job offer must be for a company that is offering a position that is related to their degree and experience. The position must also normally require a bachelor's degree or higher. The company must have a need for someone in that position and must have the resources to be able to pay them what is normally paid to someone in that position. All these things must be provable with financials, business plan, etc. Also, because they are used up for this year, they will need to apply on April 1, 2017 to start working on October 1, 2017 or later. The exception is if they each apply for a cap-exempt job and those are at an institution of higher education or its affiliated or related nonprofit entities or a nonprofit research organization, or a government research organization. Those are not subject to this numerical cap.
Here is an official link to the H-1B:
Because they do not have money to invest and only have Sudanese citizenship, they cannot qualify for E-1 or E-2 visas and since I assume they cannot prove that they worked for a company outside of the U.S. for at least 1 year out of the last 3 years, they would not be eligible for an L-1 visa either to transfer them to a U.S. branch, subsidiary, parent, or affiliate of the foreign company.
That basically leaves getting into a new F-1 program or a J-1 program, or perhaps winning Asylum, or maybe marrying a U.S. Citizen (for love, not papers). So there are options, but very limited.
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