College Transitions has some data on that subject in the article the OP and I have been discussing.
Overall you can see that 6.58% of Harvard grads went to law school, and 4.56% went to a top law school. For UTD it was 1.55% and 0.15%.
Then in the Undergraduate to Law School Pipeline chart, you can get some more information.
By far the biggest “pipeline” for Harvard College was to . . . Harvard Law School. That was followed by Yale, Georgetown, Stanford, Columbia, Cal, NYU, BC, and Penn. BC is the only of those not a T14, but obviously like Harvard it is in Boston, and the more of this data you look at, the more apparent is that locational effects are definitely playing a role in outcomes.
UTD, top by quite a margin was SMU. That was followed by TAMU, Houston, Texas, Oklahoma City, St. Mary’s, and UVA. UVA is the only T14 on that list, but it is worth noting Texas is one of the law schools just outside the T14 and for sure people interested in Texas, or possibly greater regional, employment might prefer Texas over various T14s.
Of course comparing Harvard and UTD is such a big difference it is hard to really know what all this means. Like just to get a somewhat objective baseline, Harvard is #3 in WalletHub’s Student Selectivity ranking. UTD is #202. So that might well have something to do with all this.
When looking at, say, Macalester versus Texas . . . I chose that comparison mostly because it seemed of possible relevance to the OP, but also because while those are extremely different sorts of institutions, in terms of selectivity they are at least broadly similar–like WalletHub had Macalester at #72, and Texas at #69.
So we discussed above the basic difference in top law school outcomes, and then here are some pipeline details.
For Macalester, tied for the top are Minnesota and Mitchell Hamline (a private law school in Minneapolis), followed by Georgetown, St Thomas (Minneapolis again), Michigan, and Iowa. Georgetown and Michigan are the official T14s, but Minnesota is like Texas in terms of national as well as state/regional prominence.
For Texas, it was Texas (no surprise), followed by Houston, Southern Texas, SMU, St Mary’s, Texas Tech, Baylor, Harvard, and TAMU. Harvard is the only T14, but we discussed Texas being fringe like Minnesota.