Which wallets are built deterministically? (Besides Bitcoin Core)
Electrum's distributed binaries are determinisitc. Although Electrum is written in an interpreted language, the distributed binaries also need to provide the dependencies and the packaging process for producing binaries for python software is not deterministic. Electrum has their own process for ensuring dependency versions and determinism of their binaries.

Mycelium's distributed binaries are deterministic built. They use a docker container instead of Gitian to produce their binaries.