from an algorithm standpoint its better to have multiple task specific channels that stick to a theme that similar enough to itself that the same viewers will generally like all the videos ad watch them.
If you have a single channel or 2 channels with the main one being half of your stuff and the second one being the other half the algorithm will see that sections of your demographics dont like X or dont like Y and make it far less likely that your stuff will be shown to new people an in extreme cases make it far less likely itll be shown to your subscribers.
If you have a single channel or 2 channels with the main one being half of your stuff and the second one being the other half the algorithm will see that sections of your demographics dont like X or dont like Y and make it far less likely that your stuff will be shown to new people an in extreme cases make it far less likely itll be shown to your subscribers.