WordPress hosting with a staging environment gives you the option to choose what exactly gets rolled out to your live site. The staging environment is the premium feature that only offered by the premium WordPress hosting providers. The WordPress Hosting providers offer this feature also give WP users scalable resources(RAM, memory, CPU) to make the WordPress high-performance works 200x faster than normal WordPress hosting. Below is the list of WordPress hosting with staging Environment:

FlyWheel High-performance WordPress Hosting
+ Genesis Framework
+ 30+ StudioPress Themes
+ SSL Certificate
+ CDN (powered by Fastly)
+ Staging Sites
+ Site Cloning
+ Daily Backup
+ Scalable WordPress Hosting
+ Server locations: Australia, Belgium, Germany, Japan, Netherlands, Taiwan, United Kingdom, United States		Purchase now
Cloudways WordPress Hosting
+ Free SSL Certificate
+ Site Cloning 1-click
+ Team Collaboration
+ Staging Environment
+ Git Integration
+ Vultr, Digital Ocean, Amazon AWS, Linode, Google Cloud servers
+ SSH, Git, and WP-CLI 
+ Good Tech Supports
+ Scalable WordPress Hosting		Purchase now
Mediatemple WordPress Hosting
+ Staging sites
+ SSH, Git, and WP-CLI 
+ Scalable WordPress Hosting		Purchase now
Greengeeks WordPress Hosting
+ Free domain name
+ Free SSL certificate
+ Free CDN
+ Staging Environment
+ SSH access, Git, WP-CLI, SFTP, phpMyAdmin
+ LSCache LiteSpeed cache
+ Free Dedicated IP(premium plan)		Purchase now
Nexcess Liquidweb Managed WordPress Hosting
+ Staging Site
+ SSL certificate
+ Beaver Builder Lite
+ iThemes Security Pro and iThemes Sync
+ SSH, Git, and WP-CLI 
+ Scalable WordPress Hosting
+Server locations: Australia, Germany, Netherlands, United Kingdom, United States		Purchase now
10web WordPress Hosting
+ Staging area
+ Free SSL certificates
+ Drag & Drop Editor based on Elementor
+ AI Website Builder
+ Google Cloud server
+ Scalable WordPress Hosting		Purchase now
Scalahosting web hosting

Free & Effortless Migration
Free SSL Certificates For ALL Websites
Free Domain
Free CDN
SSD Powered Servers
Unlimited Emails
Unlimited Databases
Unlimited Bandwidth
1-Click WordPress Installer
Automated Daily Backups
SSH Access and WP-CLI
Git Support
WordPress Staging/Cloning
Brute-force Protection
GZIP Compression		Purchase now
WP Engine
+ Caching
+ CDN
+ Free SSL
+ Regular backups
+ Staging environment
+ Server locations: Australia, Belgium, Canada, Germany, Ireland, Japan, Netherlands, Singapore, Taiwan, United Kingdom, United States		Purchase now
Kinsta
+ Caching
+ CDN
+ Free SSL
+ Regular backups
+ Staging environment
+Server locations: Australia, Belgium, Brazil, Canada, Finland, Germany, India, Indonesia, Japan, Netherlands, Singapore, South Korea, Taiwan, United Kingdom, United States

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Pagely
+ Caching
+ CDN
+ Free SSL
+ Regular backups
+ Staging environment
+ Server locations: the United Kingdom, the United States		Purchase now
mshini
 +Caching
 +Free SSL
 +Regular backups
 +Staging environment
+Server Location: South Africa		Purchase now
Presslabs
 +Caching
 +CDN
 +Free SSL
 +Regular backups
 +Staging environment+ Git push to deploy
+ Server locations: Asia, Europe, United States		Purchase now
34sp.com
+Caching
+CDN
+Free SSL
+ Regular backups
+Staging environment
+Server location: United Kingdom		Purchase now
Pantheon
+ Server location: United States
+ Caching
+ CDN
+ Free SSL
+ Regular backups
+ Staging environment		Purchase now
Siteground
+Free WP Installation
+Free WP Migrator
+Free SSL
+Daily Backup
+Free CDN
+Free Email
+WP-CLI and SSH
+Staging (Grow big plan or higher)
+Server locations: Australia, Germany, Netherlands, Singapore, United Kingdom		Purchase now