Yakuza 8's name change was specifically for new Western players

The creators of Yakuza / Like a Dragon: Infinite Wealth, Ryu Ga Gotoku Studio, have given some explanation for the series title change

When does Like a Dragon Gaiden fall on the Yakuza Timeline

The Real Reason The Yakuza Series Is Changing Its Name

A Deep Dive Into Every Yakuza Minigame – The Story Arc

Sega still calling the franchise Yakuza? : r/yakuzagames

Sega has formally dropped the Yakuza brand name and replaced it with Like a Dragon : r/JRPG

Yakuza developer explains Like a Dragon 8 title differences

Yakuza Spin-Off Like a Dragon Gaiden Was Originally Planned as DLC

Yakuza: Like a Dragon

Characters of the Yakuza series - Wikipedia

Yakuza's selective English dubbing reminds me of going home

no i will NOT call it like a dragon gaiden no i will NOT call it like a dragon 8 infinite wealth : r/yakuzagames

The Complete List of Yakuza Games in Chronological Order - Cheat Code Central