Hello Loner T,
iMac 17,1 with identical BT package list you posted (please see below). I'll check out $WinPEDriver$ next.
</Name>
<Name>Bluetooth Driver Management Service
<InfName>BtwSerialBus-dev.inf</InfName>
<Class>System</Class>
<ClassGUID>{4D36E97D-E325-11CE-BFC1-08002BE10318}</ClassGUID>
<CatalogFile>btwserialbus-devx64.cat</CatalogFile>
<Provider>Broadcom</Provider>
<DriverVer>07/17/2015,12.0.1.700</DriverVer>
<ServiceBinary>btwampfl.sys</ServiceBinary>
<HardwareID></HardwareID>
<isX64>yes</isX64>
</Name>
Model Name: iMac
Model Identifier: iMac17,1
Processor Name: Intel Core i7
Processor Speed: 4 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 32 GB
Boot ROM Version: IM171.0110.B00
SMC Version (system): 2.34f2
<Name>Apple Built-in Bluetooth
<InfName>AppleBT.inf</InfName>
<Class>Bluetooth</Class>
<ClassGUID>{e0cbf06c-cd8b-4647-bb8a-263b43f0f974}</ClassGUID>
<CatalogFile>AppleBT.CAT</CatalogFile>
<Provider> "Apple Inc."</Provider>
<DriverVer>03/01/2010, 3.0.0.5</DriverVer>
<ServiceBinary>applebt.sys</ServiceBinary>
<HardwareID></HardwareID>
<isX64>no</isX64>
</Name>
<Name>Apple Built-in Bluetooth
<InfName>AppleBT64.inf</InfName>
<Class>Bluetooth</Class>
<ClassGUID>{e0cbf06c-cd8b-4647-bb8a-263b43f0f974}</ClassGUID>
<CatalogFile>AppleBT64.CAT</CatalogFile>
<Provider>"Apple Inc."</Provider>
<DriverVer>03/01/2010, 3.0.0.5</DriverVer>
<ServiceBinary>applebt.sys</ServiceBinary>
<HardwareID></HardwareID>
<isX64>yes</isX64>
</Name>
<Name>Apple Broadcom Built-in Bluetooth
<InfName>AppleBTBC.inf</InfName>
<Class>Bluetooth</Class>
<ClassGUID>{e0cbf06c-cd8b-4647-bb8a-263b43f0f974}</ClassGUID>
<CatalogFile>AppleBTBC.CAT</CatalogFile>
<Provider>"Apple Inc."</Provider>
<DriverVer>07/31/2015,6.0.6100.0</DriverVer>
<ServiceBinary>AppleBtBc.sys</ServiceBinary>
<HardwareID></HardwareID>
<isX64>yes</isX64>
</Name>
</Name>
<Name>Bluetooth Driver Management Service
<InfName>BtwSerialBus-dev.inf</InfName>
<Class>System</Class>
<ClassGUID>{4D36E97D-E325-11CE-BFC1-08002BE10318}</ClassGUID>
<CatalogFile>btwserialbus-devx64.cat</CatalogFile>
<Provider>Broadcom</Provider>
<DriverVer>07/17/2015,12.0.1.700</DriverVer>
<ServiceBinary>btwampfl.sys</ServiceBinary>
<HardwareID></HardwareID>
<isX64>yes</isX64>
</Name>