For the H-1B, it's really just getting selected in the lottery, the actual substantive requirements aren't difficult; the J-1 is easy but with limited exceptions it's not supposed to be used for regular employment.

Thank you for clarification. I wonder if there is any stat on how many initial H1B applicants make it to the lottery list to be selected. Is the process straightforward or does government/Labor Dept challenges a certain percentage of applicants.