@Aveeva ,

try https://mage2gen.com/

it has the following features and information you need::  

• Api
• Block
• Cache
• Category Attribute
• Company Attribute (Magento Commerce)
• Component
• Configuration Type
• Console Command
• Controller
• Crongroup
• Cronjob
• Customer Attribute
• Customer(Section) Data
• EAV Entity
• EAV Attribute (custom)
• GraphQl Endpoint
• GraphQl Url Locator
• Helper
• Language
• Model
• Observer / Event
• Payment Method
• Plugin
• Preference / Rewrite
• Product Attribute
• Product Type
• Sales Attribute
• Shipping Method
• System / Config / Setting
• Unit Test
• Viewmodel
• Widget

to override the block class you can use "Preference / Rewrite"

in this, you need to enter the class name which you want to override.

kindly Accept as a Solution! if this solves your issue and give Kudos!