I've cut down my list of 27 possible motherboards for my legacy custom-build to seven, and now doing Google searches to look for any linux problems or incompatibilities with their chipsets:
Nvidia nforce 720D
AMD 770
AMD SB710
Realtek 8111C
Realtek 8111D
Realtek 8111 C/D(L)
ITE IT8720
T.I. TSB43AB23
JMicron JMB362
If there are any known problems with these, please advise, just in case I overlook any. Thanks!