Hello UNEXPECTANT! The distribution across Leagues depends on the Competition type. The selection in Personal Competitions is determined by the level of the player's Town and in the case of Clan and Global ones - by the Clan’s Influence. 

Also according to the game rules Jarls are divided into smaller groups within one League in a Competition. Due to this the chances of winning become higher. Please bear in mind that the rewards in all groups within one League are the same.

UnexpectAnt said:

For clan ... the League depends on clan influence. Does anyone have a table for these?

i have no table but from personal experience with clan... around 6 billion influence begin clan master league... around 15-16 billion clan influence begin the odin league...

If enough people share their own experience here... with the data, we will be able to create a table

I think with all the mega clans ... maybe they need to do a bit of a readjustment ... also since towns can go to level 31 they might want to readjustment there also.

Are you talking about Clan v CLan?

Was your clan over 5million influence when the competition was announced?.

Have you an assigned opponent?

If not this is why you are not playing. 

I  was tempted to write my gripe message here, but it doesnt seem to quite fit in with the theme .