Googe Wallet (2011) became Android Pay (2015) became Google Pay (2018) became Google Wallet (2022), except in some places. Also, except in the US (and maybe elsewhere?) where Google Pay is still around but just to send money between people.
Google Talk (2005) and Google+ Messenger (2011) sort of became Google Hangouts (2013), which was part of Google+ (2011) which became Hangouts (2013), which became both Duo (2016) and Allo (2016) but then during both Duo and Allo became Hangouts Meet (2019) and Hangouts Chat (2019) which became Google Meet (2017 -- Yes, Hangouts Meet was still around) and Google Chat (2017 -- Yes, Hangouts Chat was still around). Google Allo died in 2018 and Duo died in 2022.
Inbox (2015) became a better gmail Android app than gmail actually was. Inbox discontinued in 2019 with the advertisement that gmail integrated Inbox's features (it didn't add most of them). This spawned other 3rd party gmail handling apps to take its place.
Google Play Music (2011) podcasts split into Google Podcasts (2018) stopped having releases in 2021 and rolled up/is rolling up into YouTube Music (2015). Google Play Music became YouTube Music in 2020.
Right now there's even Android Auto and Android Automotive simultaneously to pretty much do the same thing but are not the same. Android Automotive itself exists as Android Automotive with Google Automotive Services and also as Android Automotive without Google Automotive Services.
Android Auto for Phone Screens was replaced with Google Assistant's driving mode.
There are many, many, many more crazy branding issues but I just don't feel like continuing. Google has also killed at least 54 hardware lines, 59 apps and 210 services.