Hi,
I have a very similar Latitude 5410 laptop with an i7-10610U running Big Sur with OpenCore.
Specs:
Intel i7-10610U processor
Intel UHD 620 graphics
16GB 3200Mhz DDR4 Memory
256GB NVMe Drive
Realtek ALC3204 Audio
Intel Wi-Fi AX201
Intel I219L NIC
Here's what I have working so far:
Keyboard works with backlight, volume hotkeys, backlight toggle hotkey
Internal speakers working
Wifi, Airport, Bluetooth
Battery level seems right
I found a random Github repo of some guy's working Latitude 5400: Github. I copied his config.plist DeviceProperties section. It's for an i5-8265U so I have no idea why it works but it does. I have hardware acceleration working! Attaching updated config.plist. If anyone can give me a hand with the trackpad, I'd appreciate it but other than that it's all working! Brightness hotkeys for the display as well, if anybody has any experience with those.
config.plist.zip
I haven't been able to get the trackpad working, linux shows it as an I2C-HID device but the Voodoo kext isn't working for me either. Any help would be greatly appreciated! Attaching my EFI folder. @denkteich if you end up getting it installed my EFI should at least help with sound, wifi and ethernet, my specs for those are almost identical to yours.
EFI.7z