There's been a lot of historical work done in the past and I used NIST FIPS181 to implement this.

Note: FIPS181 was intended for passwords and I was using them as handy short human-readable record IDs as per your post. You probably shouldn't use FIPS181 for passwords in 2026 LOL.

Describing FIPS181 as pronounceable is optimistic. However its better than random text wrt human conversations. They start looking like mysterious assembly language mnemonics after awhile.