TAMU and UTD are undeniably great safeties to have. Yet the whole point of the thread is that the OP wants more safeties and matches (as per the title).
Unfortunately, once the in-state options have been exhausted, there may not be any out-of-state schools that will offer a perfect combination of (1) reputation, (2) accessibility, and (3) affordability. Pretty much any out-of-state school that can be suggested will be compromised in one of these respects, relative to the in-state options.
- A less well-known out-of-state public school (like Utah) may be accessible and affordable. But it may not have the desired national reputation.
- A big-name out-of-state public school (like a UC) may have the reputation and may be accessible. But it may be accessible only because it has a high out-of-state price tag that drives most people away.
- Some relatively accessible private schools (like Lehigh or SCU) have strong reputations for CS. But they may be accessible only because they are less wealthy, and again come with a price tag that drives people away.
- A wealthier private school (like USC or Stanford) may have a great reputation, and may offer great financial aid that makes the cost affordable. But any school like that is probably going to get a ton of applicants, which means low accessibility.
So if you are looking for reputation, accessibility, and affordability in out-of-state schools, you may realistically have to settle for just two out of three.