There are many ways to evolve languages.
But little do people realize that they could use those multiple ways to create language families.
I plan to make two of my conlangs in this conworld, the one with the consonant harmony system and the one with the retroflex and ejective constants, descendants of the same language. Here are the two languages:
The consonant harmony one:
Consonants: m, n, mˀ(m'), nˀ(n'), p, t, k, ʔ('), p', t', k', s, ɕ(c), h, tɕ(tc), tɕ'(tc'), l, j, w, lˀ(l'), jˀ(j'), wˀ(w')
Vowels: i, u, e, o, ε(ae), ɔ(ao), a
(Plain vs. glottalized is the system, yet, the ejectives and other consonants aren't part of it.)
The retroflex and ejective-rich one:
Consonants: m, n, ɳ, p, t, ʈ, k, s, ʂ, ts, ʈʂ, w, ɭ, p', t', ʈ', k', ts', ʈʂ'
Vowels: ɪ, iː, ʊ, uː, ɛ, eː, ɔ, oː, æ, aː
This is the idea I have for the ascendant language's phonology.
Consonants: m, n, ŋ, p, t, k, ʔ('), p', t', k', s, ʃ(c), h, tʃ(tc), tʃ'(tc'), w, l, j
Vowels: i, iː, u, uː, e, eː, o, oː, a, aː
Syllable structure: ???
Word order: ???
I'll do a similar thing for my desert conlang and that one with the pre-nasalized and pharyngealized consonants. Here are the two phonologies:
Desert conlang:
Consonants: m, n, b, t, d, c, k, g, f, s, z, ʃ, ç, x, r, l, ʘ, ǁ, t', k', ts, tʃ, cç
Vowels: a, i, o, u
The other one:
Consonants: m, n, ŋ, p, ᵐb, t, tˤ, ⁿd, k, ᵑg, θ, θˤ, ð, ðˤ, s, sˤ, ħ, ʕ, l, lˤ
Vowels: a, e, i, o, u
More will get added.