[Fire HD 8 and HD 10 General] :
Here is the list of everything I uninstalled on my Kindle.

There are some descriptions so you can tweak for your own needs.

Do not remove because it disables the home button

# Fire Launcher
pm uninstall --user 0 com.amazon.firelauncher
# DeviceSoftwareOTA
pm uninstall --user 0 com.amazon.kindle.otter.oobe
# Amazon Retail Demo
pm uninstall --user 0 com.amazon.kor.demo

I keep those personally

# H2Application
pm uninstall --user 0 com.amazon.alta.h2clientservice
# Video (Amazon Video)
pm uninstall --user 0 com.amazon.avod
# Profile Settings
pm uninstall --user 0 com.amazon.h2settingsfortablet
# com.amazon.kindle.otter.settings (My Account)
pm uninstall --user 0 com.amazon.kindle.otter.settings
# Music (Amazon Music)
pm uninstall --user 0 com.amazon.mp3
# Parental Controls
pm uninstall --user 0 com.amazon.parentalcontrols
# Parental Monitoring Service
pm uninstall --user 0 com.amazon.pm
# Fire Standard Keyboard
pm uninstall --user 0 com.amazon.redstone
# FreeTime
pm uninstall --user 0 com.amazon.tahoe
# Weather
pm uninstall --user 0 com.amazon.weather
# Amazon System WebView
pm uninstall --user 0 com.amazon.webview.chromium
# Shop Amazon
pm uninstall --user 0 com.amazon.windowshop
# Calendar Storage
pm uninstall --user 0 com.android.providers.calendar
# Contacts Storage
pm uninstall --user 0 com.android.providers.contacts

Everything I remove

# Alexa Cards
pm uninstall --user 0 amazon.alexa.tablet
# amazon.jackson19
pm uninstall --user 0 amazon.jackson19
# amazon.jackson19 (???)
pm uninstall --user 0 amazon.jackson19
# Advertising ID
pm uninstall --user 0 com.amazon.advertisingidsettings
# Amazon GameCircle
pm uninstall --user 0 com.amazon.ags.app
# Calculator
pm uninstall --user 0 com.amazon.calculator
# Camera
pm uninstall --user 0 com.amazon.camera
# Amazon Metrics Service Application
pm uninstall --user 0 com.amazon.client.metrics
# com.amazon.client.metrics.api (Amazon Metrics Service Application API)
pm uninstall --user 0 com.amazon.client.metrics.api
# Silk Browser
pm uninstall --user 0 com.amazon.cloud9
# com.amazon.cloud9.kids (Silk Browser Kids)
pm uninstall --user 0 com.amazon.cloud9.kids
# System Browser Provider
pm uninstall --user 0 com.amazon.cloud9.systembrowserprovider
# Help
pm uninstall --user 0 com.amazon.csapp
# Alexa
pm uninstall --user 0 com.amazon.dee.app
# Backup and Restore
pm uninstall --user 0 com.amazon.device.backup
# Amazon Backup and Restore Internal SDK
pm uninstall --user 0 com.amazon.device.backup.sdk.internal.library
# CrashManager
pm uninstall --user 0 com.amazon.device.crashmanager
# Log Manager
pm uninstall --user 0 com.amazon.device.logmanager
# DeviceSoftwareOTA
pm uninstall --user 0 com.amazon.device.software.ota
# Amazon Whispersync DX
pm uninstall --user 0 com.amazon.device.sync
# Amazon Whispersync SDK
pm uninstall --user 0 com.amazon.device.sync.sdk.internal
# Contact Sync Adapter
pm uninstall --user 0 com.amazon.dp.contacts
# Facebook Adapter
pm uninstall --user 0 com.amazon.dp.fbcontacts
# com.amazon.dp.logger
pm uninstall --user 0 com.amazon.dp.logger
# Maps (Amazon Maps)
pm uninstall --user 0 com.amazon.geo.client.maps
# Map API v2: Application Support
pm uninstall --user 0 com.amazon.geo.mapsv2
# Amazon Maps Platform Services V2
pm uninstall --user 0 com.amazon.geo.mapsv2.services
# Fire Tutorial
pm uninstall --user 0 com.amazon.kcp.tutorial
# Amazon Kindle
pm uninstall --user 0 com.amazon.kindle
# Fire Whispercast
pm uninstall --user 0 com.amazon.kindle.devicecontrols
# Special Offers (Lock Screen Ads)
pm uninstall --user 0 com.amazon.kindle.kso
# Forced OTA
pm uninstall --user 0 com.amazon.kindle.otter.oobe.forced.ota
# My Videos (Personal Video Player)
pm uninstall --user 0 com.amazon.kindle.personal_video
# Legal Notices
pm uninstall --user 0 com.amazon.legalsettings
# VoiceView
pm uninstall --user 0 com.amazon.logan
# com.amazon.mw (Firefly)
pm uninstall --user 0 com.amazon.mw
# com.amazon.mw.sdk (Firefly SDK)
pm uninstall --user 0 com.amazon.mw.sdk
# Mayday
pm uninstall --user 0 com.amazon.ods.kindleconnect
# Photos (Amazon Photo)
pm uninstall --user 0 com.amazon.photos
# Photo Importer
pm uninstall --user 0 com.amazon.photos.importer
# Precog
pm uninstall --user 0 com.amazon.precog
# Precog (???)
pm uninstall --user 0 com.amazon.precog
# On Deck
pm uninstall --user 0 com.amazon.readynowcore
# Amazon Recess
pm uninstall --user 0 com.amazon.recess
# Amazon Recess (???)
pm uninstall --user 0 com.amazon.recess
# System Updates
pm uninstall --user 0 com.amazon.settings.systemupdates
# Manage Social Networks
pm uninstall --user 0 com.amazon.socialplatform
# Chooser Menu
pm uninstall --user 0 com.amazon.unifiedshare.actionchooser
# Amazon Facebook Share
pm uninstall --user 0 com.amazon.unifiedsharefacebook
# Amazon Goodreads Share
pm uninstall --user 0 com.amazon.unifiedsharegoodreads
# Amazon Sina Weibo Share
pm uninstall --user 0 com.amazon.unifiedsharesinaweibo
# Amazon Twitter Share
pm uninstall --user 0 com.amazon.unifiedsharetwitter
# AlexaShoppingApp
pm uninstall --user 0 com.amazon.vans.alexatabletshopping.app
# Appstore (Amazon Appstore)
pm uninstall --user 0 com.amazon.venezia
# Kindle Store
pm uninstall --user 0 com.amazon.webapp
# AmazonKKWebViewLib
pm uninstall --user 0 com.amazon.webview
# Amazon WebView Metrics Service
pm uninstall --user 0 com.amazon.webview.metrics.service
# Whisperlink Activity View
pm uninstall --user 0 com.amazon.whisperlink.activityview.android
# Whisperlink SDK
pm uninstall --user 0 com.amazon.whisperlink.core.android
# WhisperPlay Daemon
pm uninstall --user 0 com.amazon.whisperplay.contracts
# Documents
pm uninstall --user 0 com.amazon.zico
# com.android.backupconfirm
pm uninstall --user 0 com.android.backupconfirm
# Calendar
pm uninstall --user 0 com.android.calendar
# Contacts
pm uninstall --user 0 com.android.contacts
# Clock
pm uninstall --user 0 com.android.deskclock
# Documents
pm uninstall --user 0 com.android.documentsui
# Email
pm uninstall --user 0 com.android.email
# Music (Music Player)
pm uninstall --user 0 com.android.music
# One Time Init
pm uninstall --user 0 com.android.onetimeinitializer
# Downloads
pm uninstall --user 0 com.android.providers.downloads.ui
# com.android.sharedstoragebackup
pm uninstall --user 0 com.android.sharedstoragebackup
# com.android.wallpapercropper (Wallpaper Cropper)
pm uninstall --user 0 com.android.wallpapercropper
# Audible
pm uninstall --user 0 com.audible.application.kindle
# Goodreads
pm uninstall --user 0 com.goodreads.kindle
# WPS Office for Amazon
pm uninstall --user 0 com.kingsoft.office.amz
# Fire Keyboard Simplified Chinese Pack
pm uninstall --user 0 jp.co.omronsoft.iwnnime.languagepack.zhcn_az
# Fire Keyboard (Asian)
pm uninstall --user 0 jp.co.omronsoft.iwnnime.mlaz
# Mopria Print Service
pm uninstall --user 0 org.mopria.printplugin