They only share a brand and a subset of filter lists - the implementation and functionality of uBlock Origin Lite and uBlock Origin are entirely different.
When UBOL was released for Safari I switched to it from 1Blocker in hopes of getting a closer experience to the full uBlock Origin, but actually switched back after a few weeks - the filter lists in UBOL were letting through more ads than 1Blocker - and both of them are notably deficient compared to uBlock Origin in Firefox.
uBlock Origin on Firefox Mobile is significantly better than any Safari adblocker I've been able to find. (1Blocker's the best I've found for Safari.)