Central Dutch dialects

Central Dutch dialects are a group of dialects of the Dutch language from the Netherlands.
They are spoken in entire Holland, Utrecht Province, Southern Gelderland, North Brabant and few parts of Limburg (Netherlands) and Friesland.
It borders to Low Saxon without Gronings, Limburgish, Brabantian and Zeelandic.
Urkers, Frisian and Frisian mixed varieties are geographically close, too.
Mainly Hollandic-influenced Standard Dutch is spoken within the respective areas of East Flemish, West Flemish, West Limburgish, Southeast Limburgish and Gronings as well. 
https://www.academia.edu/3130916/De_analyse_van_taalvariatie_in_het_Nederlandse_dialectgebied_methoden_en_resultaten_op_basis_van_lexicon_en_uitspraaken has a
classification based on several characteristics:
it has some of the area of Central Dutch as "Overijssel" and vice versa,
Centraal westelijke dialecten and Central Dutch area is greatly contingent, 
Centraal zuidelijke dialecten is also greatly contingent with Central Dutch.
Driemaandelijkse bladen, 2002, p. 133/134, is phonetically based and has the following divisions inter alia:
Both Jo Daan (South Guelderish) and Jan Goossens (Kleverlandish) have Liemers
dialect as part of their respective group. Daan's classification depends on the
speakers' perception of the dialects. Goossens published a study in 1970, in which
he used rigid single isoglosses as a basis.
Goossens justifies his classification by a few words. Daan's study dates from 1969. It was asked
how the general population perceives its own and other dialects.
Goossens published a study in 1970 in which he used rigid single isoglosses as a
basis. Georg Cornelissen has rigid single isoglosses as a basis. Giebers 2008 also has Kleverlandish running into South Gelderland. The
studies given above are based on several characteristics. 
In both Germany and Belgium, dialect use has declined sharply since 1970. Young
people only speak regiolect. Boundaries have been drawn on the basis of old
isoglosses. Stadsfries is wrongly seen as Hollandic. Frisian mixed varieties has Stadsfries together with Amelands, Bildts and Midslands.
These dialects have similarities with Frisian.
The other dialects in this group in that study are Stellingwerfs. 
Stellingwerfs is not very close to them. The question cannot be answered whether Stellingwerfs varieties are more
related to Frisian or to Low Saxon.
Eupen dialect is similarly different from Luxembourgish as from Hollandic. Wenker's original Rhenish fan putside the Netherlands largely has been reduced to 
regiolects and formal Luxembourgish. 
South Guelderish.
The definition of South Low Franconian is simply done on the basis of isoglosses. South Guelderish according to a number of authors includes the dialect of the Overkwartier of Gelre or North Limburg. The term "Limburgish" has
a number of contradictory definitions, which also include North Limburgish. A well-founded study has Limburg North of the Uerdinger Line together with most of the South of Dutch Limburg, but with neither South Guelderish of Gelderland nor Southeast Limburgish. Most of South Low Franconian has Central Franconian components such as tonal language.
The problem of any transitional variety like South Low Franconian is that the 
division is arbitrary. 
In Limburg, a different dialect is spoken every 5 km There are many methods for dividing that continuum: Levenshtein-distance is one of them, isoglosses is another, arrows method is another. Limburgish is an unclearly defined term, Kleverlandish and South Low Franconian are defined on the basis of isoglosses.
Germany.
There is a small area in the Netherlands and a large area in Germany with Kleverlandish tone accent. Kleverlandish of Germany has a lot in common with the dialects of North Limburg. In the Southern part of
Kleverland, it is closer to the dialects of North Limburg than to the dialects of
South Gelderland. On the other hand, the dialects in German municipalities on the
border to the south of Gelderland show strong similarities with those in the
south of Gelderland. 
It has both the Limburgish of Germany and the Moselle Franconian of Germany under Central Franconian languages and not under Low Franconian.
 However, most studies have Limburgish as Low Franconian.
Bergish is in the
Ripuarian-Low Franconian transition area. There is not too great a role in Germany of the Uerdingen Line. 
The area of Low Franconian is without for example Wuppertal.
This classification is based on the Wenkersätze from 1877, but since then the
dialect in Germany has been subject to severe erosion. In large parts hardly any
dialect is spoken. All discussions about detailed dialect boundaries in Germany are now becoming purely historical and academic. 
Duisburg, Kleve (district), Viersen (district) and Mettmann (district) and also the city of Düsseldorf speak Low Franconian.
Cornelissen and Goossens justify their classification with a few words.
https://bergischplatt.de/wie-men-te-fut-met-der-iserbahn-reist/ is
an example of Bergish.
https://www.mijnwordsboek.nl/dialect/Tiens is an example of 
Westgetelands. Both are South Low Franconian according to the definition, but the difference is
big. Central Franconian is neither Low German nor High German/Central German. 