I care not whether a range, dishwasher, refrigerator, or (ordinary) laundry equipment is bolted to the floor. IMO, it's a 'fixed' appliance, even if it has wheels or rollers that let you shift it around for cleaning. The space where it sits is 'dedicated' space, and not 'open' wall space by any stretch of the imagination.
Why do I say that? I say that because the plumbing connections, the gas connections, the sewer connections, and the big, fat 240v 30a (or greater) requirements preclude the appliances from being used in just any odd corner.
I don't think I have ever seen any house where areas that were designed to take these large appliances also had receptacles in them. spaced according to the '12 ft. rule.' Nope - especially since '96, and the requirement for a 'laundry circuit.'
We did have a code cycle or two where it was debated whether a refirgerator could be powered by an SABC. Current code says it has to be.
Current code also says there can be NO other outlets on the SABC's. If we can't have the microwave in the upper cabinets, the dishwasher and the disposall on an SABC .... I'd say we're also forbidden to have the range igniter on it. (I thought you were allowed to have such incidentals, though. Where did that language go?)
I'd suggest tying it into the range hood / microwave circuit ... but there's another 'dedicated' circuit we can't tap into.
Code language certainly leaves quite a bit to be desired. That's what happens when you try 'one size fits all' design rules.
Personally? Were I inspecting, I would NOT trace back the igniter circuit to determine its' source. I'm not going to look that close. I expect that nearly all such igniter receptacles are ties into whatever circuits are nearby and handy.
What would ne nice would be .... a receptacle that had an OCPD, so I could tap into a 50A circuit for it ... then I could run power for an electric range - and provide for a gas rang as well, with the same circuit! (The handy-box covers with the Edison fuse holders don't quite do it.)