I've been thinking of a typological index of linguists, using Greek letters..
And I'd like to have your feedback.

Language as an instrument
γ graphemes, writing systems, epigraphy, decipherment
λ lexemes, morphemes, classes, parts of speech, lexicology, immediate constituents
μ inflectional morphology, derivational morphology, syntagmatic morphology
π prosody, metric, versification, expressiveness, phonostylistic
φ phones, phonemes, tones

ο onomastics, toponymy
α grammatical abstractemes (TAM, case, actants), anaphora, cataphor, psychomechanics, diathesis, valency,
ς syntax, linguistics of the sentence,
δ synchronic descriptive studies of languages
ϝ variationism, geo-, socio-, dialecto-logy
ν normative languages, creation of literary languages, normative grammars, handbooks
θ sacred language(s), languages of bears, coyotes, etc.
χ artificial languages
ψ language levels or registers

Enunciation, implementation of languages
η enunciation, deictics, shifters, speech linguistics
ξ handbooks, pedagogy, acquisition
ρ rhetoric, stylistics, effects of meaning, figures of rhetoric
ϙ interactionism, locutionary, illocutionary
Comparative studies
ε etymology, reconstruction of proto-languages
κ comparatism, classification, phylogeny, basic vocabularies
υ universals, typology

Texts, productions
ζ oralopaedia, mythography, tales and legends
ι anthropology of languages, awareness (Weltanschauung), “anthropolingy”
τ texts, philology, study of texts, literary genre(s)
ϡ song, art of singing

Theory
β bibliography, biographies, index of linguists, historiography, history of linguistics
ω epistemology, methodology, theories and theoretical frameworks

Are excluded from the scope of linguistics: cryptography, logicism, language pathologies, semantics, semiotics, literature, literary studies,