Poul Anderson has Danellians, Neldorians and Time Patrol.
Parallel narratives, except that:
"Galactic Patrol" means space travel whereas "Time Patrol" means time travel;
the difference in the quality of writing could not possibly be greater.
I have compared Isaac Asimov unfavorably with Anderson and must do this even more so with Smith. The subject of EE Smith came up when I explained to some fellow comics fans that the Green Lantern called Arisia gets her name from Smith's Lensman series.
In fact, the Guardians of the Universe, the Weaponers of Qward and the Green Lantern Corps provide another parallel with Arisians/Eddorians/Galactic Patrol and Danellians/Neldorians/Time Patrol, especially since the first Time Patrol collection was called Guardians Of Time - and Green Lantern is better than Lensman.
I suggested earlier on this blog that Poul Anderson's squirrel-like Chee Lan flying into combat with a gravity harness resembles one GLC member who is squirrel-like and, of course, flies into combat with a power ring. But Anderson also explains the entire social and economic basis of the conflict. Fans of Lensman or Green Lantern can find more in the Time Patrol and the Technic History.