A2631 (probably wrongly marked above its USB-C port with PD sign), A2632 and A2633 are quite similar devices (if not identical), meaning belong to the same PowerPort III Nano series (unrelated to Anker PD series of power supplies).
Back to my initial post here: “PI’s fast charging chips are also used in dozens of products of famous brands such as Apple, OPPO, and Samsung.” PI SC1548C is built inside of Belkin dual USB-C PD GaN 68W, one of the most reliable (not cheap) power supplies that I could find suitable for charging Librem 5. In addition, Belkin USB-C2 port is based on Navitas NV6115 (relatively old but still one of the most expensive charging controllers) and I’m quite sure that it charges Librem 5 quite similarly to Belkin USB-C1 port. What I’m not sure (while lazy at this moment) is if Belkin USB-C 68W power supply charges PinePhone at all (as PinePhone is not PD conform).
In short (from my side, or objectively positive side), your Librem 5 should be “happy” every time you decide to connect it to here related Belkin dual USB-C PD GaN 68W (WCH003dqWH). Rest of your here provided opinions are irrelevant to me (especially if used peripheral equipment isn’t indeed USB-IF PD3.0 compliant).
EDIT: @Jt0, if pocket size of power supply matters to you I already made some fully working demonstration of, with the Librem 5 compatible power delivery device (although not the one that I really prefer), PD compatible and manufactured from Anker at the same time: USB-DCP-5V-1.5A protocol and Librem 5 - #3 by Quarnero.
Why not to be polite and contribute/add there some similar working demonstration (post) with your advanced (not some cheap product) Belkin dual USB-C PD GaN 68W power supply?