Wyck Hill and Nacarat are among 14 remaining entries for the Racing Plus Chase at Kempton on Saturday, in which Katenko is a notable absentee.
Trainer Venetia Williams had mentioned the valuable event after her Gold Cup hope won at Cheltenham, but she instead relies upon Summery Justice.
Wyck Hill beat Katenko at Ascot and David Bridgwater's charge still holds entries in the Gold Cup and the Grand National.
Bridgwater said: "We're thrilled with how he's been and can't wait for Saturday.
"It's a £100,000 handicap so it's going to take some winning. Henderson and Nicholls are bound to have something lined up, but we're honoured to be favourite.
"We've been in discussions with some people about selling him as I own a bit of him as well, but at the minute all there have been are discussions."
Tom George's Nacarat won the race for a second time last year, having firstly struck in 2009. He also also finished second and third in previous renewals.
Paul Nicholls has left in the top-weight What A Friend, Rolling Aces and Join Together, while Nicky Henderson's possibles are Roberto Goldback and Quantitativeeasing.
Hector's Choice, last year's runner-up, could aim to go one better.
Race specialist Philip Hobbs can chose from 2011 winner Quinz and Duke Of Lucca. Opening Batsman, Same Difference and Mister Hyde are also engaged.
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O'Brien makes hurdles bow
Chrome shines with new work partner
Panther primed for big Gold run
Derby Fever for Godolphin
Toast recovering from setback
Motion out to keep winning Sequence
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Curtis keen on Townend for Tea
Flintham upholds family honour
Newmarket moves to avoid split
Weld sweet on 'middleweight' Zawraq
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Ballydoyle brigade excites Hensey
Angel leads the way in Lincoln
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Monaghan on the up
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Godsmejudge on track for Aintree
Ground key to Found Guineas attempt
Thriving Berkshire Ganay-bound
Gleneagles set for Curragh spin
Ginge handed Topham option
Side sights set on World place
Tizzard 'really pleased' with Card
Limato pencilled in for Ascot
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Gold goal for Biographer
National aim for Alderwood
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Tank to bid for Gold compensation
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Moore hoping for Rome glory
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Faugheen to get Aintree entry
McCoy - Door has very good chance
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Rheu in line for Aintree
Baker bags Smullen and Spencer
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Motion expects Sheema test to suit
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Classy line-up for Curragh opener
Lough among National defectors
Flemenstar to return at Navan
Griffin eyes Ryanair tilt
Tower team consider options
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Azorian heading to Fairyhouse
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Rawnaq in Aintree frame
Aintree aim for Heron
Bass in tune with Towcester treble
Zarwaan popular in Lincoln market
Sandown or Punchestown for Tiara
Dexter sights set on Doncaster
Sherwood considering Cloud options
Geraghty hoping to make Punchestown
Malabar heads straight for Guineas
Nephew jockey plans up in the air
Sprinter future still in limbo