The top spot is unchanged, with Lord Kirkham still leading the way, but the fortunes of some of the top ten, including that of the Morrison family, fell during the year.
A £40m increase in his fortune has moved Jack Tordoff up one place into ninth. His JCT600 motor business made a £12.5m profit on £667m sales in 2012. With £107m net assets it should be worth £290m. His other assets add £40m for a total of £330m.
Another high-profile family business is Normanton-headquartered discount retailer Poundworld, founded as a single store in the 1970s by Chris Edwards. He and his son, also Chris, have increased their fortune by £70m to £150m, moving up from 29th to 14th position.
A successful year for Bettys & Taylors helped Jonathan and Lesley Wild move up one place to 19 as their fortune increased by £31m to £136m. Bettys & Taylor made £10m profit on £133.1m sales in 2012. With nearly £90m net assets, the Harrogate confectionery group is worth £130m. Other assets add £6m to the Wild family.
The £221m acquisition of Huddersfield-based Thornton & Ross by a German healthcare company has boosted Jonathan Thornton and family from 35th to 14th with a £68m rise in their fortune. The wider Thornton family and trusts should have made at least £175m from the deal. After-tax and allowing for other assets, the family should be worth £150m.
But not all the members of the Rich List are prospering. Sir Ken Morrison and his family have seen the value of their stake in the Bradford supermarket chain fall, pushing the family wealth down by £70m to £940m. The recent near 22 per cent fall in half year profits will not help matters.
Another faller is Hull City FC owner Assem Allam, who drops from fifth to ninth spot after his wealth decreased by £100m to £317m. Allam also runs Allam Marine, a Hull-based manufacturer and supplier of industrial and marine generators, which made £22.6m profit in 2011. The Allam family owns the £230m company. Other assets add £87m.
Lord Kirkham, whose name is synonymous with Doncaster-headquartered furniture group DFS, which he sold for £400m in 2010, has retained his place at the head of the list. His wealth rose by £50m in the last year to £1.15bn as his investments in the Iceland frozen food chain and retail parks come good.
Kirkham's rise is mirrored by the overall total for our top 100, which rose by nearly eight per cent to £11.4bn.
Other Rich List members with South Yorkshire-linked fortunes include construction magnate Terry Bramall.
In 1968 Bramall joined the Doncaster-based Keepmoat construction group, co-founded by his father. The business was sold in 2007 for £783m. The Bramall family had a 72per cent stake. After-tax and his charitable work, Bramall should be worth £425m.
Despite maintaining his wealth at £90m, Sheffield United owner Kevin McCabe drops from 22nd position to 29th. A Saudi prince recently bought a 50 per cent stake in the Blades though McCabe remains as co-chairman.
Of the 100 millionaires in the list, 46 have made their fortunes from industry, be it traditional or high tech.
Women are still thin on the ground, though there are 11 in the Top 100 - the same as last year - either singly or as part of a husband-and-wife team.
The full Insider Rich List, compiled by Philip Beresford, is available in this month's Yorkshire Business Insider.