My list "theory " so far
Doug, you and I are asking same question about scan lists. I still don't know what the "persistent group list" is. you can create a max of 32 GID lists each of which can be scanned by checking a box under personality and selecting one of the lists. Unlike Motorola there is no separate digital contacts master list. So every group list is a potential group receive/scan list. Now this is mostly speculation on my part since I'm as new to this as you are. I'm in NC and our linked dmr system uses about 5 GID's mostly with option of a few more such as regional TG's etc. I guess all ot these GID's (TG's) should be put in a single list just big enough to hold them (you can custom size list capacity). When a personality is created for a repeater pair on this system I'd select that list, pick ptt selcall from it and if I then check group scan box it will receive every GID in that list. Unchecked it only receives the ptt selcall GID.
The limiting factor is 32 lists. In Motorola I'm not sure there is a limit to "group receive" lists, in fact you can make one for every personality till memory full. Some people create a group list for every personality (channel) even if it only has 1 member. With Kenwood you only have 32 lists, big or small to select ptt selcall and receive GID. Check the box and you scan whole list.
So, this is my theory and hopefully someone will correct it for you and me both!