Here's some hardware information that can be pulled from the software side (kernel source/inspecting dmesg).

Chipset: Qualcomm msm8930aa
Wifi/Bluetooth: Qualcomm Prima (driver, unknown[*] qcom chip)
Display (DSI+panel?): OriseTech otm9608a
Touchscreen: Focaltech ft5316 or Synaptics s3202
Camera (back, front): OmniVision ov8825, OmniVision ov2675
Camera LED flash: Analog Devices adp1650
NFC: NXP Semiconductors‎ pn544
Acceleration: Bosch Sensortec bma255
Magnetic/compass: Bosch Sensortec bmm050
Motion/gyro: STMicroelectronics l3gd20
Proximity/ambient light: TAOS tsl2772

I'm quite sure I've got these right (correct me if I'm wrong :P). It would be interesting to know what wifi/bt(/fm?)-combo chip there's inboard. It also looks like Jolla device was ODM'ed by Qisda Corporation, no idea who/where actually manufactured it though.

Edit.[*]Wifi/Bluetooth chip is most likely Qualcomm WCN3660 because I'm quite sure it simply can't be anything else. This chip also has FM radio capabilities even though there's been some communication from Jolla that there's no FM hardware (this threw me off). Even the qcom 'iris' radio driver that it uses is enabled in Jolla device's kernel.