Creeping Buttercup, Ranunculus repens, is a strong possibility.

Hmm, yes, Ranunculus repens definitely seems like the right track, if that's not it exactly...but sadly is a nonnative, so I will be pulling it at home where I had transplanted it.

And I sometimes keep a hand shovel with me. I usually don't use it, but in this case I was trying to see if it might be a Purple Poppy Mallow, so wanted to check the root to see if it was a thicc tap root? It sort of was...and I did transplant it back home in case it was something desirable, but I think it is Ranunculus sp, so it will become compost now. :/

Ranunculus repens should have a terminal leaflet with a petiolule, and the 2 side leaflets should be sessile. In the 3rd photo it looks like the side leaflets also have petiolules?

^ Kinda hard to say... On some, you see clear petioles...on others, the leaflets seem to taper down them...so where do you draw the line?

The above pic looks like the leaflets all have petiolules. The petiolule on the terminal leaf is whited out and hard to see because of the angle. The leaflets in the 1st 2 photos are caught at angles where it's difficult to see the petiolules, and the way the leaflets curve up makes judging the petiolules even more difficult. The only shot with a clear view of the petiolules is in the 3rd photo, and it's bleached out by the sun, but I still can see the 3 petiolules. It looks like a small buttercup with heavily disected leaves growing underneath the plant.

This is Rununculus repens with the 2 sessile side leaflets and the terminal leaflet having a petiolule. Notice that the leaves seem more disected than your plant.

This has petiolules that match your plant better and the shape of the leaflets look closer than the more disected leaflets of Ranunculus repens. This plant has rhyzomes and/or tubers. I could be way off, you can go back and check the petiolules again. It's Tenpetal Anemone, Anemone berlandieri, and it's quite common in the Dallas area. Also a beautiful native, that can also have lavender flowers. I like it, it's similar to Wood Anemone, A. quinquifolia that I'm going to winter-sow seeds for.

It is not Ranunculus repens. Apart from the leaf shape the texture is also different.

Ah yes, Anemone berlandieri (Tenpetal Anemone) is definitely common around here! Well awesome, no need to dig it back up for compost then...just propagating more friendly natives to go around, then! 👍

So, as requested, I believe this is one of the ones I had transplanted that then bloomed back at the end of February!