WhatsApp does but the author of this sheet has chosen to list it as "claimed", despite other also-unverified clients like Telegram getting a "true" for their (non-default) e2e support.

FWIW I believe Riot/Matrix are planning e2e by default as soon as their implementation stabilises. Theirs is more complex/powerful than WhatsApp's though since they have multidevice support (which WhatsApp lacks). They've avoided making it default sofar due to bad UX and the possibility of losing access to conversations across devices, but it's improving rapidly.