Most important species in human disease: 

Haemophilus influenzae
Aggregatibacter actinomycetemcomitans    

Most important species in animal disease: 

Pasteurella multocida (poultry, pigs, cattle, rabbit)

Actinobacillus pleuropneumoniae
(pigs)

Glaesserella parasuis (pigs)

Mannheimia haemolytica (cattle)

Bibersteinia trehalosi (cattle, sheep)

Avibacterium paragallinarum (chicken)