According to Ra, more evolved 3d souls get higher priority in their pre-incarnative programming and also have more likely formed key relationships with other advanced souls to maximize chance of harvestability. Now certainly the service of helping newer 3d souls is on the table, I'm not certain on how probable it may be in most cases, at least not at an extensive capacity and there seems to be a strategy (blueprint) at hand and time-incarnations until harvest is a limited commodity. Like maybe getting 6 graders to help 1st graders is more of a short term benefit in learning for the 6th grader as graduation is near, while the 1st grader will have long term benefits but wont exactly skip a bunch of grades ahead to make the same graduation date. While they all exist in the same school, their interactions may be more transient or peripheral (communal?) at least perhaps in the majority of cases. This is complete assumption of course as we are all veiled, but it makes sense if you just correspond it to 'normal life', peer groups are just that, but certainly you will have some that are dedicated to helping and teaching those of a much lower 'capacity' or 'experience' level.
As far as incarnated Wanderers helping advanced 3d souls, the LOO material has pretty much stated as much, because the point is in maximising harvestability and helping transition into the 4th. Also considering that these wanderers are veiled and initially 'not awakened' yet, they may also be helped by 3d souls to fulfill their mission, some of whom may appear to be more 'evolved' at this time due to being able/allowed to penetrate into 4d earlier. Wanderers may have certain karmic restrictions placed on them, so not only will they need help, but may not be allowed to help certain individuals or become awakened until a certain time. They are bound by the Law of Confusion, so certain dynamics may need to be maintained, as we know from history that breaching the LoC has implications that may manifest in a multitude of ways. I would assume that most recent incarnated wanderers have more precise plans and collaborations, while the majority of earlier ones were mostly here to raise vibrations (according to Ra) and so may have had less interactions due to karmic/LoC reasons, or simply have less experience in these matters. I have a theory that wanderers who are very solitary and feel very out of place is actually an incarnative feature and not a bug, and it may be more of a training round to better adapt for subsequent incarnations where they are scheduled for more intensive collaborative service. In other words, a more experienced and well trained wanderer will make a more successful missionary to the natives, as no plan is garantied under the veil. I would not be surprised if the wanderer had multiple incarnations with diverse relations tied to their future students, if even at a mundane level.
As far as incarnated Wanderers helping advanced 3d souls, the LOO material has pretty much stated as much, because the point is in maximising harvestability and helping transition into the 4th. Also considering that these wanderers are veiled and initially 'not awakened' yet, they may also be helped by 3d souls to fulfill their mission, some of whom may appear to be more 'evolved' at this time due to being able/allowed to penetrate into 4d earlier. Wanderers may have certain karmic restrictions placed on them, so not only will they need help, but may not be allowed to help certain individuals or become awakened until a certain time. They are bound by the Law of Confusion, so certain dynamics may need to be maintained, as we know from history that breaching the LoC has implications that may manifest in a multitude of ways. I would assume that most recent incarnated wanderers have more precise plans and collaborations, while the majority of earlier ones were mostly here to raise vibrations (according to Ra) and so may have had less interactions due to karmic/LoC reasons, or simply have less experience in these matters. I have a theory that wanderers who are very solitary and feel very out of place is actually an incarnative feature and not a bug, and it may be more of a training round to better adapt for subsequent incarnations where they are scheduled for more intensive collaborative service. In other words, a more experienced and well trained wanderer will make a more successful missionary to the natives, as no plan is garantied under the veil. I would not be surprised if the wanderer had multiple incarnations with diverse relations tied to their future students, if even at a mundane level.