There's no clear pattern for Bissouma and this hasn't really been tested as Hughton hasn't really had all three fit players at his disposal this season for any long period. He appeared ahead of a fit Gross for example at beginning of this season (Liverpool (A). But you were absolutely equivocal...
Bissouma has had disappointing performances and some excellent performances but yes thats subjective.
But Hughton either, according to you, hasn't played Bissouma ahead of any other midfielder when clearly he has. So what is it ?
Apart from the multiple times this season that he hasn't. Bissouma started 10 games out of 28 this season and 10 further apps from the bench. The other games he was injured.
And likewise Bernardo had a run of 9 games in a row in Nov / Dec (then he was injured) ahead of Bong and is now back ...