Hosting for 15 client sites

I'm looking for hosting for 15 Wordpress client sites. Currently, there are on a mix of Clo\*dways and Flywheel. I've been pretty happy with Clo\*dways, but their markup and recent acquisition by Digital Ocean are both turnoffs. I'd definitely like to move away from Flywheel.

The busiest site gets about 500k users/month and about 1MM pageviews. The others are considerably smaller. My current monthly hosting spend is about $160/month and I'd like that to come down considerably. I figure I can probably get by with 2 - 4GB servers for all the sites. I've run my own bare server running Cyberpanel and would like to avoid that much server maintenance so am primarily looking at cloud hosting panels.

I'm currently considering RunCloud, Gridpane, and Cloudpages, but am open to any similar options. I am planning on using VultrHF servers, but am also open to other options. And why can't you have Clo\*dways in a post here?