If Loki lives past this arc I really don't see how they'd both be top 2 among the allies after Luffy
Loki is pretty much guaranteed to be stronger/more important than them due to his fruit and Ragnir (Galleila)
I know some of y'all will fight me on this due to the whole "wings" thing but that's never been synonymous with being the strongest with Luffy period. They're simply his 2 most trusted men and the strongest in his crew
Rayleigh and Gaban were weaker than Garp yet their dynamic still worked. If Loki doesn't join the crew then Oda won't harm the wings at all by making Loki stronger than them for the rest of the story
So I'd say they'll be top 3 on Luffy's side. Maybe closer to top 4-5 depending on how insane Dragon's scaling is and how Oda feels about Sabo/Kidd going into EOS
This has nothing to do with wings and more to do with One Pieces plot structure, like this is not a new take of mine, its actually a pretty luke warm old take
At the end of the day the last arc of one piece will be overblown but in the core same Arlong park. As in the mosnter trio will fight the strongest opponents of the world (blue) and none else
Now the argument to this is they were obviously other strong characters at that point in the story (roger, Shanks, Mihawk, Dragon)
Those will, however, be powercrept at that point
Just like people thought you cant be stronger than Kekdo Loki can and will powercrept at some point
Also, Rayleigh and Gaban are not a comparison either, just like the SH already transcended the regular structure of a yonko crew, they will also transcend the regular structure of PK crew as Luffys journey and dream goes beyond that and he will fight opponents Roger didnt even see in his life, and accomplish thinks that Joyboy and his crew didnt