Google and Samsung phones have options to disable fast charging, though it's hidden in the system menus. Google phones have a feature that 'intelligently' (linear regression) scale down charge current at night so it reaches full just before your set morning time.

The Samsung phone I had was pretty good, you had separate options to disable fast charging on either wired or wireless.

But really my solution is quite simple: none of my habitual charging spots have a fast charger, they're all 5V 2A adapters. I do have a couple of fast chargers around the house, I just don't use them unless I really need to. It's a deliberate decision to fast charge.

That and where applicable I limit my devices to 80-90% full charge. My Linux thinkpad has firmware level support for this, it's very nice.