Elyce Lin-Gracey (junior) and Soho Lee (advanced novice) will make their international debuts next month at Challenge Cup in the Netherlands, per the USFS international assignments page

Yes, Elyce Lin-Gracey, 14, was 5th in Junior and Soho Lee, 12, had qualified for Nationals in Junior (ISU age limit does not apply for Nationals) but withdrew before the start of Nationals so her name was not listed as WD in the final standings.
Egna Spring Trophy is now listed on the USFS page so I assume Katie Shen will go here along with hopefully 1 or 2 others.
Yes, sounds good!

Katie was amazing in her FS at Nationals, winning the Junior FS with 7 clean triples and excellent skating and pulling up from 8th in SP for the pewter medal. The audience in Nashville really showed their appreciation after she skated!
Belatedly, 2021 Junior national silver medalist Kanon Smith (who AFAIK had not competed since Skate Milwaukee's Junior Cup in July 2021) placed 4th in Junior Women group I at the Bavarian Open with a total score of 143.51 (48.75/26.29 TES in SP, 94.76/46.49 TES in FS) and got the Junior Worlds minimums of 23/38 in her debut international).
Removing the non-ISU Junior age-eligible skaters and the ones who did not qualify in/compete Senior or Junior at 2022 Nationals - this is the list of 12 who currently have the Junior Worlds TES minimums (I've included their 2022 Nationals placements in brackets):
Elsa CHENG [J8] Bavarian Open 2020 04/02/2020 36.12 J Bavarian Open 2020 05/02/2020 55.02 J
Hanna HARRELL [S8] ISU JGP Grand Prix de Courchevel 2019 22/08/2019 28.43 J ISU JGP Grand Prix de Courchevel 2019 23/08/2019 55.13 J
Hannah HERRERA [J9] Challenge Cup 2020 21/02/2020 27.99 J Challenge Cup 2020 22/02/2020 55.23 J
Mia KALIN [J6] ISU JGP Baltic Cup 2021 30/09/2021 33.57 J ISU JGP Kosice 2021 04/09/2021 60.18 J
Josephine LEE [J3] USA ISU JGP Courchevel (2) 2021 26/08/2021 24.50 J ISU JGP Courchevel (2) 2021 27/08/2021 42.56 J
Isabeau LEVITO [S3] ISU JGP Courchevel (2) 2021 26/08/2021 41.08 J ISU JGP Cup of Austria 2021 09/10/2021 73.56 J
Alysa LIU [S-wd] ISU Junior Grand Prix Final 2019/20 05/12/2019 41.01 J ISU JGP Baltic Cup 2019 20/09/2019 83.94 J
Clare SEO [J1] ISU JGP Courchevel 2021 19/08/2021 36.60 J ISU JGP Baltic Cup 2021 01/10/2021 57.93 J
Audrey SHIN [S6] Winter Youth Olympic Games 2020 11/01/2020 33.45 J Winter Youth Olympic Games 2020 13/01/2020 60.73 J
Lindsay THORNGREN [S5] ISU JGP Ljubljana Cup 2021 23/09/2021 40.90 J ISU JGP Courchevel 2021 20/08/2021 65.23 J
Kate WANG [S7] ISU JGP Cup of Austria 2021 08/10/2021 34.07 J ISU JGP Krasnoyarsk 2021 18/09/2021 61.21 J
Ava Marie ZIEGLER [J2] ISU JGP Kosice 2021 02/09/2021 32.77 J ISU JGP Kosice 2021 04/09/2021 59.62 J
I doubt Alysa (Olympics/Worlds) and Audrey (4th at 4CC) are candidates for Junior Worlds and we should hear soon which ones are attending the Junior Worlds team selection camp that's happening today and tomorrow in Norwood, Mass. I heard unofficially that Thorngren is not at the camp (makes sense since she is the 1st alternate for the Olympics) and assume she will be selected, along with Isabeau Levito, so there very likely will only be one spot open among the remaining contenders.