I never heard of a division of good saints or better saints. There is No Scripture teaching such an idea.
Perhaps if you google
www.jw.org you can find the information about saints or holy ones.
Jesus said the saints or holy ones are granted the kingdom - Daniel 7:18; Luke 22:28-30
The majority of people will Not be in heaven with the saints or holy ones, but will live right here on planet earth forever.
The saints or holy ones are the ones who will have a first or earlier resurrection - Revelation 20:6; Revelation 5:9-10; Revelation 2:10
What did Jesus promise people at Matthew 5:5? Isn't that in connection to Psalms 37:11; Psalms 37:29 ?
Yes, Jesus' earthly subjects will be during Jesus' millennium-long day of governing over earth. Notice ' sea to sea ' at Psalms 72:8.
Revelation is written in very-vivid word pictures. Which ' sea ' will be No more ? Isaiah 57:20 talks about the wicked are like the troubled ' sea'.... see also Isaiah 17:12 likening people to the noise of the sea. So, Not all in Scripture is literal. That is true of Revelation's very-vivid word pictures. The earth abides forever - Ecclesiastes 1:4 B - so the oceans will always be here but the restless sea of wicked mankind will Not. - Proverbs 2:21-22. Rivers will be here on earth too - Revelation 22:2 - besides the return of the Genesis ' tree of life ' for the healing of earth's nations.
In the meantime Jesus' earthly subjects are those who are part of the Christian congregation having Jesus as head. Ephesians 5:23 B