Just my opinion on what I consider notable for having a result table on a driver's page. For one event participation, I would say No to a table if they are only a Guest driver, unless they have participated in the series before as a full entry (i.e. a driver who is eligible to score points), e.g. Alexander Sims in Euro F3 or later became a full entry, e.g. Mathias Lauda in the Porsche Supercup. I would say a definite Yes to the table if they scored points and Yes even if they didn't score points. Not included in this list are Motorcycle championships because I've never edited them.
Open Wheel
Yes:
Formula One
GP2/International Formula 3000
Formula 2
GP3
Formula Renault 3.5 Series
European Formula 3/F3 Euroseries
IndyCar/Champ Car/CART
Indy Lights
Pro Mazda/Star Mazda
Formula E
Super Formula/Formula Nippon/Japanese Formula 3000 etc
Auto GP/Euroseries 3000 (Possibly also when it was known as Italian Formula 3000)
A1 Grand Prix
Superleague Formula
No:
All Formula Renault 2.0 and below including British, BARC, Alps, NEC, Eurocup and other domestic championships.
Toyota Racing Series
MRF Challenge
USF2000
Atlantic Championship (New), original debatable
Formula Masters China
Acceleration 1
All Formula 3 below Euro F3, so German, British, Japanese etc.
All Formula 4
All Formula Ford
All Formula BMW
Other Open wheel series, e.g. Maruti, Asia, Vauxhall, Nissan.
Touring Cars
Yes:
World Touring Cars
DTM including original DTM/International Touring Cars
British Touring Cars
European Touring Cars
Scandinavian/Swedish Touring Cars
International V8 Supercars. Full time drivers only.
TCR International Series
International Superstars/Euro V8
Stock Car Brasil
Debatable:
European Touring Car Cup due to it only recently having more than one round and lack of driver pages.
TTA due to there being only one year of it.
SEAT Leon Eurocup due to it being a potential feeder to WTCC.
Clio Cup UK due it being a feeder to the BTCC.
No:
TC2000
Campionato Italiano Superstars
International V8 Supercars. Endurance drivers only, unless they have competed in a full season previously e.g. Alexandre Premat.
Other SEAT Leon championships.
Other TCR series
All Brazilian feeder series, e.g. Brasileiro de Turismo.
All Australian feeder series, e.g. Dunlop V8 Supercar Series.
Japanese and Chinese Touring Cars
Other Renault Clio Cup series
Other one-make series.
Sportscars (Prototypes & GTs)
Yes:
World Endurance
IMSA Sportscar/American Le Mans
European Le Mans
Blancpain Sprint/GT Series/GT1 World Championship
British GT
Super GT
Porsche Supercup
24 Hours of Le Mans, Spa & Daytona.
Debatable:
Carrera Cup Germany and GB based on being prominent feeder series to the Supercup.
FIA GT Sportscars
Blancpain Endurance
Any other 24 Hours race including Dubai & Nürburgring.
No:
Other domestic Carrera Cup championships, e.g. France, Scandinavian.
Ginetta GT Supercup/G50 Cup
Ginetta Juniors
Other one-make sportscar series, e.g. Ferraris, Lamborghinis, Audi R8 (Alex Yoong).
NASCAR
Only Sprint Cup, Xfinity & World Trucks.
Rallying & Rallycross
Yes:
World Rally, WRC2, WRC3.
European Rally
Dakar Rally
World Rallycross
Global Rallycross
Debatable:
Rally America
No:
All domestic rally championships, e.g. British, African.
Just my opinion on what I consider notable for having a result table on a driver's page. For one event participation, I would say No to a table if they are only a Guest driver, unless they have participated in the series before as a full entry (i.e. a driver who is eligible to score points), e.g. Alexander Sims in Euro F3 or later became a full entry, e.g. Mathias Lauda in the Porsche Supercup. I would say a definite Yes to the table if they scored points and Yes even if they didn't score points. Not included in this list are Motorcycle championships because I've never edited them.
Open Wheel
Yes:
Formula One
GP2/International Formula 3000
Formula 2
GP3
Formula Renault 3.5 Series
European Formula 3/F3 Euroseries
IndyCar/Champ Car/CART
Indy Lights
Pro Mazda/Star Mazda
Formula E
Super Formula/Formula Nippon/Japanese Formula 3000 etc
Auto GP/Euroseries 3000 (Possibly also when it was known as Italian Formula 3000)
A1 Grand Prix
Superleague Formula
No:
All Formula Renault 2.0 and below including British, BARC, Alps, NEC, Eurocup and other domestic championships.
Toyota Racing Series
MRF Challenge
USF2000
Atlantic Championship (New), original debatable
Formula Masters China
Acceleration 1
All Formula 3 below Euro F3, so German, British, Japanese etc.
All Formula 4
All Formula Ford
All Formula BMW
Other Open wheel series, e.g. Maruti, Asia, Vauxhall, Nissan.
Touring Cars
Yes:
World Touring Cars
DTM including original DTM/International Touring Cars
British Touring Cars
European Touring Cars
Scandinavian/Swedish Touring Cars
International V8 Supercars. Full time drivers only.
TCR International Series
International Superstars/Euro V8
Stock Car Brasil
Debatable:
European Touring Car Cup due to it only recently having more than one round and lack of driver pages.
TTA due to there being only one year of it.
SEAT Leon Eurocup due to it being a potential feeder to WTCC.
Clio Cup UK due it being a feeder to the BTCC.
No:
TC2000
Campionato Italiano Superstars
International V8 Supercars. Endurance drivers only, unless they have competed in a full season previously e.g. Alexandre Premat.
Other SEAT Leon championships.
Other TCR series
All Brazilian feeder series, e.g. Brasileiro de Turismo.
All Australian feeder series, e.g. Dunlop V8 Supercar Series.
Japanese and Chinese Touring Cars
Other Renault Clio Cup series
Other one-make series.
Sportscars (Prototypes & GTs)
Yes:
World Endurance
IMSA Sportscar/American Le Mans
European Le Mans
Blancpain Sprint/GT Series/GT1 World Championship
British GT
Super GT
Porsche Supercup
24 Hours of Le Mans, Spa & Daytona.
Debatable:
Carrera Cup Germany and GB based on being prominent feeder series to the Supercup.
FIA GT Sportscars
Blancpain Endurance
Any other 24 Hours race including Dubai & Nürburgring.
No:
Other domestic Carrera Cup championships, e.g. France, Scandinavian.
Ginetta GT Supercup/G50 Cup
Ginetta Juniors
Other one-make sportscar series, e.g. Ferraris, Lamborghinis, Audi R8 (Alex Yoong).
NASCAR
Only Sprint Cup, Xfinity & World Trucks.
Rallying & Rallycross
Yes:
World Rally, WRC2, WRC3.
European Rally
Dakar Rally
World Rallycross
Global Rallycross
Debatable:
Rally America
No:
All domestic rally championships, e.g. British, African.