Below are some potential notable starts being made by drivers this weekend. Notable meaning they will be tied with a driver in number of starts made in that specific series, or the number of starts being made is a significant number that they are reaching in their specific race this weekend at Atlanta Motor Speedway/EchoPark Speedway and Lime Rock Park. Rankings reflect the all-time starts list for that series.
(The image above each series is the driver I find having the most notable start this weekend)
*This will be updated after qualifying for each race if a driver does not make the race.

Andres Perez ties a pair NASCAR Cup Series Champions, Darrell Waltrip & Kyle Larson, by making his 17th career Truck start this weekend. Photo by James Gilbert — Getty Images
Truck Series Starts
Ben Rhodes: 225th start! Ranks 14th
Timmy Hill: 115th start ties Mike Wallace & Ross Chastain, ranks 46th
Jack Wood: 76th start ties Derek Kraus, Sheldon Creed & Ty Dillon, ranks 81st
Daniel Hemric, Jake Garcia & Rajah Caruth: 65th start ties Boris Said & Steve Park, ranks 104th
Dawson Sutton: 22nd start ties Geoff Bodine & Marcos Ambrose, ranks 284th
Andres Perez: 17th start ties Darrell Waltrip & Kyle Larson, ranks 320th
Alex Labbe, Ben Maier, Jordan Taylor, Thomas Annunziata, Wesley Slimp & William Lambros: 1st start!

Josh Williams ties an Xfinity Series great, Mark Martin, by making his 236th career Xfinity Series start this weekend. Photo by Jeffrey Vest — Icon Sportswire via Getty Images
Xfinity Series Starts
Josh Williams: 236th start ties Mark Martin, ranks 52nd
Ryan Ellis: 148th start ties Brian Vickers, ranks 110th
Austin Hill: 131st start ties A.J. Allmendinger, ranks 129th
Aric Almirola: 125th start!
Blaine Perkins, Harrison Burton & Sammy Smith: 92nd start ties Sam Ard, ranks 190th
Jesse Love: 50th start!
Kris Wright: 33rd start ties Shane Van Gisbergen, ranks 345th
Taylor Gray: 30th start ties Boris Said & Kurt Busch, ranks 357th
Nick Sanchez: 25th start!
Connor Zilisch & William Sawalich: 20th start!
Katherine Legge: 10th start!

This weekend in this special paint scheme Tyler Reddick makes milestone start 200 in his Cup Series career. Image credit: @UpperDeckSports X Page
Cup Series Starts
Brad Keselowski: 575th start! Ties Geoff Bodine, ranks 36th
Ross Chastain: 241st start ties Todd Bodine, ranks 125th
Tyler Reddick: 200th start! Ranks 149th
Riley Herbst: 26th start ties Maurice Petty, ranks 446th