Assuming you're talking about works of faith, I've never heard of a sect that does.
There is a lot of Jesus paint flying around the world that perhaps ain't much of Jesus. Mormons for example, doing good works. Are they works of faith? In their eyes, yes. I might say that the good works are fine by anyone, but perhaps no one has a 100% clean, clearcut and Perfect box for Jesus and there are probably more bad boxes than good ones.
Now you can see why John is talking about a lifestyle of righteousness vs. lifestyle of unrighteousness in 1 John 3:9 NASB. It's impossible to look at legalistically as you are doing.
No one is sinless Jethro, and that's all there is to this side of the coin.
Galatians 3:22
But
the scripture hath concluded all under sin, that the promise by faith of Jesus Christ might be given to them that believe.
Every believer should understand that the scripture has made this conclusion, and why then it is that we are not saved by works or lifestyle. By NOT being an "external slave" of sin only means we keep our sin in checkmate, by ruling and reigning over it. NOT that we become or became sinless:
Romans 6:12
Let not sin therefore
reign in your mortal
body, that ye should obey it in the lusts thereof.
This very real contrary position remains with every believer, and therefore the lust in the flesh is NEVER justified, nor can it be justified by external works. This internal contention remains within every believer:
Galatians 5:16
This I say then, Walk in the Spirit, and ye shall not fulfil
the lust of the flesh.
Fulfillment is the external actions of the lusts of the flesh. It does not say we won't have same to contend with.
Nor will any "external actions"
justify or eradicate the lusts of the flesh.
Galatians 5:17
For
the flesh lusteth against the Spirit, and
the Spirit against the flesh:
and these are contrary the one to the other: so that ye cannot do the things that ye would.
You're missing a very important point.
We all know even atheists and unbelievers do good things at various times. What non-Christians will not do is love the body of Christ.
In sight of the above, no one will be justified by the flesh nor will there be any justification of the flesh, with the factual the lusts therein.
Romans 3:20
Therefore
by the deeds of the law there shall no flesh be justified in his sight: for by the law is the knowledge of sin.
Paul explains a very important principle to understand. Indwelling sin in the flesh is adverse to Gods Laws and always will be adverse to Gods Laws and WILL work conversely, AGAINST Gods Law's, within. Therein is the source of LUST in the flesh, which will not be justified by "external works" in anyone.
Every work we do will be no different than it was with Paul, with "evil present" with us. Romans 7:21. This evil is courtesy of the lusts in the flesh, brought about by adverse workings against Gods Laws. Romans 7:7-13 Flesh with indwelling sin, which is the factual state of all of us will not change it's stripes for ANY person, believer or unbeliever.
Of course I'm not a prophet. I've just seen this blind inability to not be able to even comprehend, let alone believe, arguments leveled against the hardened indoctrinations gripping the church at this present time in history so many times that it's become very predictable.
Any "christian" sect that says the flesh with indwelling sin will be justified and sinless by external obedience doesn't have a clue what they are talking about. We do good regardless of our sin, not because we are sinless. 1 John 1:8
You say that as if there is absolutely no Biblical basis upon which a person has the right and privilege to decide if someone else is a Christian or not.
My bar is set to the lowest point that I can see, in order for "me" personally NOT to fall into condemnation of other believers, and I do this for my own "internal protection" to not be made into a slave of condemnation. This is the bar that Paul provides, IF one is not a slave to condemnation:
Romans 10:13
For whosoever shall call upon the name of the Lord shall be saved.
This, I believe, is TRUE. IF this IS True, THEN this is ALSO True:
John 5:24
Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.
Hath and is passed are done deals that are secured NOT by the person, but by Our Savior, Jesus Christ. There is no justification of any of us, in the flesh with the lusts therein and thereof, regardless.
All who have faith in Christ and have called upon Him will pass out of and away from our vile body as His Divine Guarantee.
It is those who try to justify the vile body, who have presently fallen back from faith and have fallen HEADLONG into both potential or outright condemnation of themselves or other believers, and hypocrisy applied to their own vile flesh in which dwells sin and the attendant lusts therein. And they are only fooling themselves and covering up the obvious.
I say they'll be saved regardless of that present blindness, and were so, per Jesus Words above and Paul's affirmations of same.