The LE is part of Intel(R) Software Guard Extensions for Linux* OS which is published in linux-sgx Github repository. The libsgx_le.signed.so in prebuilt package is built by le with branch sgx_2.25_reproducible and signed by Intel.
The PVE is part of Intel(R) Software Guard Extensions for Linux* OS which is published in linux-sgx Github repository. The libsgx_pve.signed.so in prebuilt package is built by pve with branch sgx_2.25_reproducible and signed by Intel.
The PCE is part of Intel(R) Software Guard Extensions for Linux* OS which is published in linux-sgx Github repository. The libsgx_pce.signed.so in prebuilt package is built by pce with branch sgx_2.25_reproducible and signed by Intel.
The QE is part of Intel(R) Software Guard Extensions for Linux* OS which is published in linux-sgx Github repository. The libsgx_qe.signed.so in prebuilt package is built by qe with branch sgx_2.25_reproducible and signed by Intel.