Opposite or Alternate

According to Google Lens, this is either Alternate-leaved Golden Saxifrage or Opposite-leaved Golden Saxifrage. The Latin names are not the same either. I can't decide which one, but I am not concerned.

Anyhow, I spotted this growing alongside a stream in the woods, and I liked the two colours together. It is quite a small plant, but was growing in clumps so it had a nice impact.