I read on both UThealth and VCU that unofficial transcripts are fine until prompted further. In the VCU application, its in the "application instructions" tab within the applyyourself application. VCU: "Unofficial uploaded transcripts are strongly encouraged for admissions purposes. If admitted a final official transcript with latest degree must be sent."
In UTHealth it was listed under requirements and instructions for applying to the GSBS school.
UTHealth: "You will need to upload copies of your transcript and test scores via the online application system. Once we complete the preliminary admissions process, we will contact you directly to request official documents if needed."
For the other schools you may just have to email, or dig a little further. I, of course, already sent my transcript to VCU before finding that. lol So that's awesome for my bank account.