OK, the index has the species sorted by size, miniature - to 3" high and or wide; dwarf - to 8" high and or wide; and compact to 12' high and or wide.
The species are as follows:
Miniature - Aerangis, Amesiella, Angraecum, Ascocentrum, Barbosella, Bolusiella, Bulbophyllum, Cadetia, Centroglossa, Cirrhopetalum, Comparettia, Dendrobium, Dipteranthus, Dracula, Dryadella, Dyakia, Encyclia, Epidndrum, Haraella, Isabelia, Laelia, Lepanthes, Leptotes, Masdevallia, Mediocalcar, Nageliella, Ornithocephalus, Phalaenopsis, Pleurothallis, Porroglossum, Psygmorchis, Restrepia, Rodrumnia, Sigmatostalix, Sophronitis, Tolumnia, Trisetella, Tuberolabium.
Dwarf - Aerangis, Aeranthes, Aerides, Agasepalum, Angraecum, Ascocentrum, Ascofinetia, Baptistonia, Barkeria, Brassavola, Brassocattleya, Broughtonia, Bulbophyllum, Cattleya, Cattleytonia, Cirrhopetalum, Cischweinfia, Cochlioda, Crepidium, Darwinara, Dendrobium, Dendrochilum, Doritaenopsis, Droitis, Dracula, Dracuvallia, Encyclia, Epidendrum, Hawkinsara, Holcoglossum, Howeara, Ionopsis, Jumella, Laelia, Laeliocatonia, Laeliocattleya, Macodes, Masevallia, Maxillaria, Mexicoa, Miltoniopsis, Mormolyca, Neofinetia, Neostylis, Octomeria, Odontoglossum, Oerstedella, Oncidium, Paphiopedilum, Phalaenopsis, Platystele, Pleurothallis, Polystachya, Ponerochis, Porroglossum, Potinara, Propetalum, Restrepia, Rhyncholaelia, Rodriguezia, Sarcochilus, Sedirea, Sigmatostalix, Sophrocattleya, Sophrolaelia, Sophrolaeliocattlelya, Sophronitis, Stelis, Senocoryne, Tolumnia, Trichocentrum, Trichoglottis, Trichopilia, Vanda.
Compact - Ada, Aerangis, Aeranthes, Aerides, Angraecum, Angranthes, Anoetochilus, Ascocenda, Barkerai, Beardara, Bifrenaria, Bothriochilus, Brassavola, Brassia, Brassocattleya, brassolaeliocattleya, Blubophylumm, Catcylaelia, Cattleya, Cirrhopetalum, Coelogyne, Cycnoches, Dendrobium, Doritaenopsis, Encyclia, Eria, Hawkinsara, Iwanagaara, Kefersteinia, Laelia, Laeliocattleya, Lycaste, Masdevallia, Meiracyllium, Mexipedium, Milpasia, Miltonia, Miltoniopsis, Odontoglossum, Odontonia, Oncidium, Pahiopedilum, Phalaenopsis, Phragmipedium, Potinara, Renathera, Rhyncholaelia, Rhynchostele, Rhynchostylis, Sophrolaeliocattleya, Stenoglottis, Trichoglottis, Trichopilia, Vanda, Vascostylis, Woodwardara, Yonezawaara, Zygoneria.
The index also sorts by ease of cuture (easy, intermediate, challenging), by light requirements, by temps, by bloom season, and by fragrance. There is also a source list for purchasing minis.
Plant descriptions are defined as follows:
Pronunciation, Synonym, Origin, Description & Qualities, Flower, Season of Bloom, Mature Size & Habit, Culture (easy etc), Light, Temps, Potting Medium.
As you can see he covers species as well as some well known hybrids.
Hope this helps.